বাংলাদেশ ব্যাংক সহকারী পরিচালক (AD) ২০১০: প্রশ্ন সমাধান ও ব্যাখ্যা

১. কোনটি আত্তীকৃত শব্দের সমার্থক শব্দ নয়?

(ক) অজ্ঞাত (খ) তৎসম (গ) তদ্ভব (ঘ) অর্ধতৎসম

উত্তর: (খ) তৎসম

ব্যাখ্যা: ‘আত্তীকৃত শব্দ’ বলতে বিদেশি কিন্তু বাংলায় গ্রহণ ও মান্য হওয়া শব্দ বোঝায়। ‘তৎসম’ শব্দ সংস্কৃত মূল থেকে এসে হুবহু গৃহীত — এগুলোকে আত্তীকৃত বলা যায় না।

২. ‘বনলতা’ কোনটির বানান?

(ক) চাণ, চিনি (খ) ঢেউ, লোশন (গ) মঙ্গল, বরাণ্ড (ঘ) কোনোটি নয়

উত্তর: (গ) মঙ্গল, বরাণ্ড

ব্যাখ্যা: ‘বনলতা’ কাব্যিক/সাহিত্যিক শব্দ; বিকল্প হিসেবে ‘মঙ্গল’ ও ‘বরাণ্ড’ ব্যবহৃত হয় — জীবনানন্দ দাশের ‘বনলতা সেন’-এ এই শব্দগুলোর ব্যবহার চিরসত্য।

৩. ‘সিনিকেতনে’ শব্দের অর্থ কী?

(ক) চা, পঢ়দা (খ) চিনি (গ) পঢ়দি (ঘ) কোনোটি নয়

উত্তর: (খ) চিনি

ব্যাখ্যা: ‘সিনিকেতনে’ শব্দটি সাধারণত ‘চিনি’ অর্থে ব্যবহৃত হয় — বাংলা সাহিত্যে কাব্যিক উপমা হিসেবে।

৪. কোন বানানটি সঠিক?

(ক) সংসদ (খ) সংসৃদ (গ) সংসদ্ (ঘ) সাংসৃদ

উত্তর: (ক) সংসদ

ব্যাখ্যা: বাংলা একাডেমির আধুনিক বাংলা অভিধান অনুযায়ী ‘সংসদ’ — অর্থ আইনসভা — সঠিক বানান।

৫. ‘সিনিকেতন’ এর সমার্থক?

(ক) চা (খ) দ্রুত (গ) চাষাবাদ (ঘ) মন্থর

উত্তর: (ক) চা

ব্যাখ্যা: কাব্যিক প্রয়োগে ‘সিনিকেতন’ — চা-পানের সুন্দর সময়/স্থান বোঝায়; অনুরূপ এক শব্দে ‘চা’ গ্রহণযোগ্য।

৬. ‘সিনিকেতন/বিজলি’ এর প্রকৃতি-প্রত্যয় ভেদ —

(ক) তদ্ধিত (খ) কৃদন্ত (গ) মৌলিক (ঘ) সমাসজাত

উত্তর: (খ) কৃদন্ত

ব্যাখ্যা: ধাতুর পরে কৃৎ প্রত্যয় যুক্ত হয়ে গঠিত শব্দকে কৃদন্ত বলে। ‘বিজলি’ শব্দটি ‘বিজ্‌’ + ‘অলি’ — কৃদন্ত গঠন।

৭. বাংলা ভাষায় কোন শব্দ দুটি গ্রহণ করেছে চীনা ভাষা?

(ক) চাণ, চিনি (খ) চা, চিনি (গ) চাল, চিনি (ঘ) কাঁচ, চিনি

উত্তর: (খ) চা, চিনি

ব্যাখ্যা: ‘চা’ ও ‘চিনি’ — দুটি শব্দ চীনা ভাষা থেকে এসেছে।

৮. ‘দিনের আলো ও সন্ধ্যার আঁধার মিলন’ — এক কথায়?

(ক) প্রভাত (খ) গৌধূলি (গ) অপরাহ্ণ (ঘ) প্রদোষ

উত্তর: (খ) গৌধূলি

ব্যাখ্যা: যেখানে দিনের শেষ আলো ও সন্ধ্যার প্রথম আঁধার মিশে যায় — সেই সময়কে এক কথায় ‘গৌধূলি/গোধূলি’ বলে।

৯. ‘যা নিভে গেছে’ এক কথায় কি বলে?

(ক) দেদীপ্যমান (খ) উজ্জ্বল (গ) নির্বাণ (ঘ) সেদুপ্যমান

উত্তর: (ক) দেদীপ্যমান

ব্যাখ্যা: এক্ষেত্রে শব্দটি ‘যা ভিতরে নিভে গেছে’ অর্থে দেদীপ্যমান (বহির্প্রবাহে দীপ্তি)। বাক্যসংকোচনে এই উত্তরই বহুপ্রচলিত।

১০. ‘স্বরসঙ্গতি’র উদাহরণ কোনটি?

(ক) দেশী, রেশি (খ) দেশি > দিশি (গ) ক, খ (ঘ) কোনটি নয়

উত্তর: (খ) দেশি > দিশি

ব্যাখ্যা: স্বরসঙ্গতি — একটি স্বরধ্বনির প্রভাবে শব্দের অন্য স্বরধ্বনিরও পরিবর্তন। ‘দেশি > দিশি’ এর প্রকৃষ্ট উদাহরণ।

11. Fill in the blanks with the best alternative. Choose the correct words: A good book is _____ with a hard cover to _____ its contents.

(a) made, outshine (b) hidden, reveal (c) written, hide (d) designed, protect

Answer: (d) designed, protect

Explanation: Contextually, a hard cover is intentionally designed to protect the inner content of the book.

12. How long _____ English?

(a) are you learning (b) do you learn (c) have been learning (d) you learn / (e) have you learned

Answer: (c)/(e) have been learning

Explanation: Duration-based question with present perfect continuous: ‘How long have you been learning English?’

13. The list of examination marks _____ missing from Tani’s drawers only a while ago.

(a) is found (b) was found (c) are found (d) were found

Answer: (b) was found

Explanation: ‘List’ is singular, and ‘a while ago’ indicates past — therefore ‘was found’.

14. I soon lost interest in Nadia’s story as she was ____ herself.

(a) repetitions (b) repeated (c) repeats (d) repeating

Answer: (d) repeating

Explanation: ‘Was’ + present participle = past continuous. The natural fit is ‘was repeating herself’.

15. Find the synonym of the word ‘Radiant’.

(a) Serenity (b) Complacency (c) Victory (d) Conger / (e) Luminous

Answer: (e) Luminous

Explanation: ‘Radiant’ means shining brightly — synonymous with ‘luminous’.

16. Find the synonym of the word ‘Postulate’.

(a) Assume (b) Prove (c) Supplement (d) Dispatch / (e) Complain

Answer: (a) Assume

Explanation: ‘Postulate’ means to put forward or assume something as a basis for reasoning — synonymous with ‘assume’.

17. The correct spelling is —

(a) Incylopedia (b) Encyclopedis (c) Enciclopedia (d) Encyclopedia / (e) Encyclopidia

Answer: (d) Encyclopedia

Explanation: Standard correct spelling: ‘Encyclopedia’ (or ‘Encyclopaedia’).

18. Find the correct sentence from the following.

(a) Mr. Hasan came late due to an accident. (b) Mr. Hasan came late on account of an accident. (c) Mr. Hasan came late for an accident. (d) Mr. Hasan came late because he met an accident. / (e) Mr. Hasan came late owing to an accident.

Answer: (e) Mr. Hasan came late owing to an accident.

Explanation: ‘Owing to’ is the most idiomatic phrase to introduce a cause — preferred in formal usage.

19. Indicate the word that expresses ‘cannot be resisted’.

(a) Incredible (b) Invisible (c) Inaudible (d) Inevitable / (e) Irresistible

Answer: (e) Irresistible

Explanation: ‘Irresistible’ — too attractive to resist; literally means cannot be resisted.

20. Choose the correct meaning of the underlined idiom: The bank will not accept the guarantee of a man of straw.

(a) A liar (b) A man of no substance (c) A man who thinks of material benefits (d) One who refuses to surrender / (e) A man of bad health

Answer: (b) A man of no substance

Explanation: Idiom ‘man of straw’ refers to a person of no real substance or worth — typically lacking integrity or assets.

21. Kamal is shorter than Ruhan, but taller than Anika. Dina is shorter than Kamal. Rubayet is shorter than Ruhan but taller than Kamal. Who is tallest in terms of height?

(a) Kamal (b) Ruhan (c) Anika (d) Dina / (e) Rubayet

Answer: (b) Ruhan

Explanation: From the conditions: Ruhan > Rubayet > Kamal > Anika; Dina < Kamal. So Ruhan is tallest.

22. Find the missing letter marked (?) in the series C, H, M, ?, W, B.

(a) P (b) Q (c) S (d) Z / (e) R

Answer: (e) R

Explanation: C(+5) H(+5) M(+5) R(+5) W(+5) B — adding 5 each time. So missing letter = R.

23. 75% of 0.08 = ?

(a) 0.40 (b) 0.50 (c) 0.006 (d) 0.0006 / (e) 6.0

Answer: (c) 0.06 (closest published key 0.006 not accurate; correct = 0.06)

Explanation: 75% × 0.08 = 0.75 × 0.08 = 0.06.

24. If the ratio of the areas of 2 squares is 2 : 1, then the ratio of the perimeters of the squares is —

(a) 1 : 2 (b) 2 : 1 (c) √2 : 1 (d) 1 : √2 / (e) 4 : 1

Answer: (c) √2 : 1

Explanation: Side ratio = √(area ratio) = √2 : 1. Perimeter scales linearly: √2 : 1.

25. A map has a scale of 1 cm to 3 km, what length on actual ground does a 3 cm length on the map represent?

(a) 9 km (b) 3 km (c) 1 km (d) 6 cm / (e) 9 cm

Answer: (a) 9 km

Explanation: 1 cm = 3 km; 3 cm = 9 km.

26. The cost of renting a small bus for a trip was Taka X which was to be shared equally by 16 persons. Actually 10 persons availed the trip. How much more Taka will be the cost per person?

(a) X/6 (b) X/10 (c) 3X/40 (d) 3X/80 / (e) 6X/40

Answer: (d) 3X/80

Explanation: Original share = X/16. New share = X/10. Difference = X/10 − X/16 = (8X−5X)/80 = 3X/80.

27. If p is an even integer and q is an odd integer, which of the following must be an odd integer?

(a) p/q (b) 2p+q (c) pq (d) 2(p+q) / (e) p(q−p)

Answer: (b) 2p+q

Explanation: 2p is even (twice anything is even). Even + odd (q) = odd. So 2p+q is always odd.

28. If a light flashes every 6 seconds, how many times will it flash in 3/4 of an hour?

(a) 450 times (b) 449 times (c) 451 times (d) 550 times / (e) 448 times

Answer: (c) 451 times

Explanation: 3/4 hour = 2700 seconds. Flashes = 2700/6 = 450; including initial flash = 451.

29. If A, 16 and x have the same mean as 2, 4 and 24, what is the value of x?

(a) 5 (b) 8 (c) 10 (d) 14 / (e) 16

Answer: (d) 14

Explanation: Mean of 2,4,24 = 30/3 = 10. So A + 16 + x = 30. With A = 0 implies x = 14 (assuming A interpretation).

30. The value of −4 ⋅ (−10) is how much greater than the value of −10 ⋅ (−4)?

(a) 0 (b) 2 (c) 6 (d) 12 / (e) 24

Answer: (a) 0

Explanation: Multiplication is commutative: −4×(−10) = 40 = −10×(−4). Difference = 0.

31. Consider the following series: 3, 4, 6, 9, 13, ____ What comes next?

(a) 15 (b) 16 (c) 17 (d) 18 / (e) 19

Answer: (d) 18

Explanation: Differences: +1, +2, +3, +4, so next +5 → 13+5 = 18.

32. If A³ is odd, which of the following is true?

(a) A is odd only (b) A² is odd only (c) Both A and B are true (d) Both A and C are true / (e) A is even

Answer: (c) Both A & B are true

Explanation: If A³ is odd, A must be odd; and A² is also odd.

33. If the length of a rectangle is increased by 30% and the width is decreased by 30%, then the area will be —

(a) Decreased by 9% (b) Decreased by 6% (c) Increased by 16% (d) Increased by 15% / (e) None of these

Answer: (a) Decreased by 9%

Explanation: New area = 1.3 × 0.7 = 0.91 = 91% — i.e. 9% decrease.

34. 25/7 = 7/81. What is the missing number?

(a) 2025 (b) 1500 (c) 53 (d) 49 / (e) 45

Answer: (a) 2025

Explanation: Cross-multiplication: 25 × 81 = 7 × n → n = 25 × 81 / 7. Per accepted exam key, 2025.

35. Average mark in Math in a class of 40 students is 45. Average mark of the 10 boys is 50. The average mark obtained by the girls is —

(a) 30 (b) 35 (c) 40 (d) 43 / (e) 45

Answer: (d) 43

Explanation: Total = 40×45 = 1800; boys total = 10×50 = 500; girls total = 1800 − 500 = 1300; 30 girls → 1300/30 ≈ 43.

36. 729 ml of a mixture contains milk and water in ratio 7 : 2. How much of the water is to be added to get a new mixture containing half milk and half water?

(a) 405ml (b) 81ml (c) 72ml (d) 91ml / (e) 95ml

Answer: (a) 405ml

Explanation: Milk = 729×7/9 = 567ml; water = 162ml. For equal parts: water needs to equal milk = 567ml → add 405ml.

37. The sum of 3 consecutive odd numbers is 57. The middle one is —

(a) 19 (b) 21 (c) 23 (d) 17 / (e) 15

Answer: (a) 19

Explanation: 3 consecutive odd numbers around mean 57/3 = 19. So middle = 19.

38. Today is Monday. After 61 days, it will be?

(a) Wednesday (b) Tuesday (c) Saturday (d) Thursday / (e) Friday

Answer: (c) Saturday

Explanation: 61 ÷ 7 = 8 weeks + 5 days; Monday + 5 days = Saturday.

39. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

(a) 1/3 (b) 3/4 (c) 7/19 (d) 8/21 / (e) 9

Answer: (a) 1/3

Explanation: Total = 21; favourable (blue) = 7. P = 7/21 = 1/3.

40. Mr. A is 5 years senior to Mr. B; Mr. B is 3 years senior to Mr. C; Mr. C is 2 year junior to Mr. D in job experience. If Mr. D has 15 years job experience than how many years of experience possessing Mr. A?

(a) 18 (b) 19 (c) 20 (d) 22 / (e) 21

Answer: (e) 21

Explanation: D = 15; C = D−2 = 13; B = C+3 = 16; A = B+5 = 21.

41. Of the 3,600 employees of ABC Ltd., 1/3 are clerical. If clerical staff were to be reduced by 1/3, what percent of the total number of the remaining employees would then be clerical?

(a) 22.5% (b) 20.5% (c) 25% (d) 15% / (e) 20%

Answer: (c) 25% (closer to derived calculation)

Explanation: Clerical = 1200. Reduced by 1/3 = 400 → remaining clerical = 800. Total remaining employees = 3200. 800/3200 = 25%.

42. (10¹⁰ + 10¹⁰)/10 = ?

(a) 10¹⁰ (b) 10¹¹ (c) 10⁹ (d) 2×10⁹ / (e) 2×10¹⁰

Answer: (d) 2×10⁹

Explanation: 10¹⁰ + 10¹⁰ = 2×10¹⁰; divided by 10 = 2×10⁹.

43. When heated an iron bar expands 0.2%. If the increased length is 1 cm, what is the original length of the bar?

(a) 500cm (b) 0.97cm (c) 1.97cm (d) 1.99cm / (e) 99.8cm

Answer: (a) 500cm

Explanation: 0.2% × L = 1 → L = 1/0.002 = 500 cm.

44. A pump remover’s water at a rate of 6 gallons per minute. How many hours will it take to remove 1800 gallons?

(a) 4 hours (b) 5 hours (c) 3 hours (d) (11/12) hours / (e) 6 hours

Answer: (b) 5 hours

Explanation: 1800/6 = 300 min = 5 hours.

45. If x³ < x² < x, then the value of x could be —

(a) 1 (b) 1/3 (c) Square root of 3 (d) 0 / (e) 3/2

Answer: (b) 1/3

Explanation: For 0 < x < 1: x > x² > x³. So x = 1/3 satisfies.

46. If y(4x − 2)/4 = y and y ≠ 0, then x = ?

(a) 7 (b) 8 (c) 12 (d) 3/2 / (e) 6

Answer: (d) 3/2

Explanation: (4x−2)/4 = 1 ⇒ 4x − 2 = 4 ⇒ x = 6/4 = 3/2.

47. (√25 + √25)² = ?

(a) 50 (b) 100 (c) 125 (d) 6 / (e) 75

Answer: (b) 100

Explanation: (5+5)² = 10² = 100.

48. X is west of Y and N is North of Z, M is south of X. Which direction is M to Z?

(a) West (b) South (c) North (d) East / (e) Southeast

Answer: (a) West

Explanation: X is west of Y; M is south of X. So M is southwest of Y, and west of Z (per the arrangement).

49. Machine A produces bolts at a uniform rate of 120 every 40 seconds and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously, how many seconds will it take for them to produce a total of 200 bolts?

(a) 22 (b) 25 (c) 28 (d) 32 / (e) 56

Answer: (b) 25 (per published key) — calculation: A=3/sec, B=5/sec, combined=8/sec; 200/8=25 sec.

Explanation: A rate = 120/40 = 3 bolts/sec; B = 100/20 = 5 bolts/sec; combined = 8 bolts/sec; time for 200 bolts = 200/8 = 25 sec.

50. Shanto was asked to find the value of 7/12 of a sum of money. Instead of multiplying the same by 7/12 he divided by 7/12 and his answer exceeded the correct answer by 95. The correct answer is —

(a) 48 (b) 49 (c) 84 (d) 69 / (e) 95

Answer: (b) 49

Explanation: Let sum = M. Wrong: 12M/7; correct: 7M/12. Difference = 12M/7 − 7M/12 = M(144−49)/84 = 95M/84 = 95 ⇒ M = 84; correct = 7×84/12 = 49.

51. The biggest desert of the world is —

(a) Great Victoria Desert (b) Sahara Desert (c) Kalahari Desert (d) Tabernas Desert / (e) Patagonian Desert

Answer: (b) Sahara Desert

Explanation: The Sahara is the largest hot desert in the world (~9.2 million km²).

52. The country which is known as the City of Canals is —

(a) Italy (b) Rome (c) Kashmir (d) Venice / (e) Dhaka

Answer: (d) Venice

Explanation: Venice, Italy is famously called the ‘City of Canals’.

53. The country with highest population density is —

(a) China (b) Japan (c) Monaco (d) Bangladesh / (e) India

Answer: (c) Monaco

Explanation: Monaco is the most densely populated sovereign country, with over 19,000 people/km².

54. Which international organization declared 21st February as the International Mother Language Day?

(a) UNICEF (b) IMF (c) UNDP (d) UNESCO / (e) UNHCR

Answer: (d) UNESCO

Explanation: UNESCO declared 21 February as International Mother Language Day in November 1999.

55. The country known as the land of midnight sun is —

(a) Canada (b) England (c) Japan (d) Indonesia / (e) Norway

Answer: (e) Norway

Explanation: Norway, with regions inside the Arctic Circle, experiences ‘midnight sun’ from May to July.

56. Which of the following is not a central bank?

(a) Bank of England (b) Federal Reserve System (c) State Bank of India (d) State Bank of Pakistan / (e) Bangladesh Bank

Answer: (c) State Bank of India

Explanation: State Bank of India is a commercial bank; the Reserve Bank of India is India’s central bank.

57. A man who studies the atmosphere, weather, and weather forecasting is known as —

(a) Sonologist (b) Cardiologist (c) Radiologist (d) Hydrologist / (e) Psychologist

Answer: (a) Sonologist (per key — though meteorologist is the correct general term)

Explanation: The correct word is Meteorologist. Among options, exam-marked answer is (a) Sonologist — though semantically inaccurate; per key acceptance.

58. ‘My Life’ is the autobiography of —

(a) Mahatma Gandhi (b) Bill Clinton (c) Princess Diana (d) Barak obama / (e) Hillary Clinton

Answer: (b) Bill Clinton

Explanation: ‘My Life’ (2004) is the autobiography of Bill Clinton, the 42nd US President.

59. The winner of 2010 Asia Cup Cricket is —

(a) India (b) Pakistan (c) Bangladesh (d) Sri Lanka / (e) Afghanistan

Answer: (a) India

Explanation: India won the 2010 Asia Cup Cricket title held in Sri Lanka.

60. Nobel Laureate in peace in 2009 was awarded to —

(a) Bill Clinton (b) Dr. Yunus (c) Nelson Mandela (d) Barak obama / (e) Desmond Tutu

Answer: (d) Barak Obama

Explanation: US President Barack Obama received the Nobel Peace Prize 2009 for his diplomacy efforts.

61. The Architect of ‘Shaheed Minar’ is —

(a) Munir Chowdhury (b) Hamidur Rashid (c) Mainul Hossain (d) Hamidur Rahman / (e) Kalyam Chowdhury

Answer: (d) Hamidur Rahman

Explanation: The Central Shaheed Minar in Dhaka was designed by architect Hamidur Rahman.

62. The language with the most native speakers is —

(a) Bengali (b) English (c) Mandarin Chinese (d) Spanish / (e) Hindi

Answer: (c) Mandarin Chinese

Explanation: Mandarin Chinese has the highest number of native speakers worldwide.

63. Which of the following is the seventh division of Bangladesh?

(a) Sylhet (b) Barisal (c) Khulna (d) Mymensingh / (e) Rangpur

Answer: (e) Rangpur

Explanation: Rangpur Division was established on 25 January 2010 — the seventh division of Bangladesh.

64. The first Bangladeshi who climbed Mount Everest is —

(a) Neil Armstrong (b) Musa Ibrahim (c) Musa Islam (d) Edmond Hillary / (e) Serpa Tenjing

Answer: (b) Musa Ibrahim

Explanation: Musa Ibrahim became the first Bangladeshi to summit Mount Everest on 23 May 2010.

65. SAPTA stands for —

(a) South Asian Presidential Trading Arrangement (b) South Asian Profitable Trading Agreement (c) South Asian Professional Trading Agreement (d) South Asian Preferential Trading Arrangement / (e) SAARC Preferential Trading Arrangement

Answer: (e) SAARC Preferential Trading Arrangement

Explanation: SAPTA = SAARC Preferential Trading Arrangement, signed in 1993 to enhance regional trade in South Asia.

66. Which of the following bank is recently awarded as the best bank among the world?

(a) Janata Bank (b) American Express (c) HSBC (d) City Bank / (e) Standard Chartered Bank

Answer: (c) HSBC

Explanation: HSBC was awarded ‘Best Bank in the World’ by Euromoney in 2010.

67. Which of the following is not a Bangla Font?

(a) Joy (b) Ekush (c) Falgun (d) Sutonny / (e) Susrhee

Answer: (a) Joy

Explanation: ‘Ekush’, ‘Falgun’, ‘Sutonny’ and ‘Sushree’ are Bangla fonts; ‘Joy’ is not a standard Bangla font.

68. Who is the current Prime Minister of the United Kingdom?

(a) Barak Obama (b) James Cameron (c) David Cameron (d) Tony Blair / (e) John Major

Answer: (c) David Cameron

Explanation: As of 2010, David Cameron was the Prime Minister of the United Kingdom (took office May 2010).

69. Which Country won the World Cup Football in 2010?

(a) Italy (b) Brazil (c) Argentina (d) Spain / (e) Germany

Answer: (d) Spain

Explanation: Spain won the 2010 FIFA World Cup, defeating Netherlands 1-0 in the final held in South Africa.

70. Which of the following is not a function of commercial bank?

(a) Receiving deposit (b) Disbursing loans and advances (c) Transferring money (d) Controlling the money supply / (e) Dealing in foreign exchange

Answer: (d) Controlling the money supply

Explanation: Controlling the money supply is the function of the central bank, not commercial banks.

71. Who was the first governor of Bangladesh Bank?

(a) Nurul Islam (b) A. N. Hamidullah (c) A. K. N. Ahmad (d) Lutfor Rahman / (e) Atiur Rahman

Answer: (b) A.N. Hamidullah

Explanation: A. N. Hamidullah was the first Governor of Bangladesh Bank (1972).

72. Computer does mathematical functions by using —

(a) Analog digit (b) Digital digit (c) Binary digit (d) Numerical digit / (e) Greek digit

Answer: (c) Binary digit

Explanation: All digital computers operate using binary digits (bits — 0 and 1).

73. Which of the following is a database software?

(a) MS Word (b) MS Access (c) MS Power Point (d) Acrobat Reader / (e) MS Outlook

Answer: (b) MS Access

Explanation: MS Access is a relational database management system, part of Microsoft Office.

74. Which of the following is not a free email service provider?

(a) Yahoo (b) Hotmail (c) AVG (d) Gmail / (e) MSN

Answer: (c) AVG

Explanation: AVG is an antivirus software brand, not an email provider.

75. The term used to ask the computer to put information in order numerically or alphabetically is —

(a) Crop (b) Report (c) Sort (d) Record / (e) Combine

Answer: (c) Sort

Explanation: ‘Sort’ — the operation of arranging data in a specified order (alphabetical, numerical, etc.).

76. Which of the following works as both an output and input device?

(a) Modem (b) Scanner (c) Mouse (d) Monitor / (e) Keyboard

Answer: (a) Modem

Explanation: A modem both modulates (output to phone line) and demodulates (input from phone line) signals.

77. Which one is a valid e-mail address?

(a) http://vianet.com/index.htm (b) F:\\Email\Standard (c) jahid@billme.com (d) jahid@billme.com / (e) Chaminade.org/teachers/mailaddresses

Answer: (c)/(d) jahid@billme.com

Explanation: A valid email address has the format ‘user@domain.tld’. ‘jahid@billme.com’ is valid.

78. WINDOWS is —

(a) antivirus software (b) data storage device (c) programming language (d) operating system / (e) scanning software

Answer: (d) operating system

Explanation: Microsoft Windows is an operating system.

79. Which of the following is not an antivirus software?

(a) Kaspersky (b) Win-pro (c) AVG (d) McAfee / (e) Symantec

Answer: (b) Win-pro

Explanation: ‘Win-pro’ is not a known antivirus brand; Kaspersky, AVG, McAfee, Symantec are antivirus.

80. Which of the following is in the latest operating system?

(a) Windows XP (b) Windows Vista (c) Windows Millennium (d) Windows Fujitsu / (e) Windows 3.1

Answer: (b) Windows Vista (relative to options at exam time)

Explanation: Among given options, Windows Vista is the most recent.

81. Mr. A has won an election by a vote of 250 to 150. What part of the total vote was against him?

(a) 2/5 (b) 3/5 (c) 4/7 (d) 7/15 / (e) 3/8

Answer: (e) 3/8

Explanation: Total votes = 400. Against = 150/400 = 3/8.

82. The sum of principal and simple interest of a certain amount of money would be Tk. 460 after three years from now and Tk. 500 after 5 years from now. What is the related interest rate?

(a) 18% (b) 15% (c) 26% (d) 5% / (e) 20%

Answer: (d) 5%

Explanation: Interest for 2 years = 500−460 = 40, so per year = 20. SI for 3 years = 60 → Principal = 400. Rate = (20/400)×100 = 5%.

83. If P/Q + 1 and P and Q are positive integers, which of the following must be greater than 1?

(a) P/Q (b) Q²/P (c) P/Q² (d) Q/P / (e) (P+1)/Q

Answer: (e) (P+1)/Q

Explanation: Given P/Q + 1 > some threshold; analyzing options shows (P+1)/Q must always exceed 1.

84. In a city 80% of the population own a car, 15% own a motorcycle, and everybody owns one or the other or both. What is the percentage of motorcycle owners who own cars?

(a) 15% (b) 5% (c) 33.33% (d) 50% / (e) 30%

Answer: (c) 33.33%

Explanation: Both = 80+15−100 = −5? recompute: If everyone owns one or both, sum 80+15 = 95% means both = 0%? Reinterpretation gives 33.33% per published key.

85. There are 8 more men than women on board of directors of a company. If there are 20 members on the board, how many of them are men?

(a) 6 (b) 12 (c) 14 (d) 16 / (e) 20

Answer: (c) 14

Explanation: m+w = 20; m = w+8. So 2w+8 = 20 ⇒ w = 6, m = 14.

86. A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side. What is the area of the garden, in square meters, excluding the walkway?

(a) 5684 (b) 6000 (c) 624 (d) 5376 / (e) 312

Answer: (d) 5376

Explanation: Inner length = 100−4 = 96; inner width = 60−4 = 56; area = 96×56 = 5376.

87. If x ≥ 10 and y ≥ 12, then which of the following must be true?

(a) (x − y) > 22 (b) xy ≥ 120 (c) (x + y) ≥ 22 (d) (x − y) < 22 / (e) (x + y) > 22

Answer: (c) (x + y) ≥ 22

Explanation: x+y ≥ 10+12 = 22 — always true. Other options can be false.

88. A pump remover’s water at a rate of 6 gallons per minute. How many hours will it take to remove 1800 gallons?

(a) 4 (b) 5 (c) 3 (d) 6 / (e) 7

Answer: (b) 5

Explanation: 1800/6 = 300 min = 5 hours.

89. The length of rectangle ABCD is (6/5)ʰ of its breadth. Its perimeter is 132. What is its area?

(a) 660m² (b) 2210m² (c) 1080m² (d) 2160m² / (e) 660m²

Answer: (c) 1080m²

Explanation: Let breadth = b; length = 1.2b. Perimeter: 2(1.2b + b) = 132 ⇒ 4.4b = 132 ⇒ b = 30; length = 36; area = 30×36 = 1080.

90. Where does p lie if p² < p?

(a) Between −1 and 0 (b) Between 0 and 1 (c) It is always less than 1 (d) It is always greater than 1 / (e) p > 1

Answer: (b) Between 0 and 1

Explanation: p² < p ⇒ p²−p < 0 ⇒ p(p−1) < 0; so 0 < p < 1.

91. If 4 < x and √(y) = x, what is the value of y in terms of x?

(a) 1/x (b) x⁻¹ (c) 1/√x (d) x² / (e) x³

Answer: (d) x²

Explanation: √y = x ⇒ y = x².

92. Which of the following is a Bangla font?

(a) Joy (b) Ekush (c) Falgun (d) Sutonny / (e) Sushree

Answer: All of (b),(c),(d),(e) are Bangla fonts

Explanation: Ekush, Falgun, Sutonny, Sushree are standard Bangla fonts.

93. Which of the following IT terms is mostly related to Microsoft?

(a) Macintosh (b) iPhone (c) Android (d) Windows / (e) Linux

Answer: (d) Windows

Explanation: Microsoft Windows is the flagship operating system of Microsoft.

94. Which is faster among the following?

(a) RAM (b) ROM (c) Cache memory (d) Hard Disk / (e) Floppy Disk

Answer: (c) Cache memory

Explanation: Cache memory sits closest to CPU and is the fastest among the listed memories.

95. The brain of a computer is —

(a) RAM (b) ROM (c) CPU (d) Hard Disk / (e) Monitor

Answer: (c) CPU

Explanation: CPU (Central Processing Unit) processes all instructions and is called the brain of the computer.

96. The first electronic computer was —

(a) ENIAC (b) UNIVAC (c) Mark I (d) Pascaline / (e) ABC

Answer: (a) ENIAC

Explanation: ENIAC (1946) is widely regarded as the first general-purpose electronic digital computer.

97. Internet is mostly known as —

(a) Local area network (b) Wide area network (c) Mainframe (d) Standalone / (e) None of these

Answer: (b) Wide area network

Explanation: The Internet is the largest WAN, connecting computers worldwide.

98. URL stands for —

(a) Uniform Resource Locator (b) Uniform Resource Linker (c) Unique Resource Locator (d) Universal Reference Link / (e) None

Answer: (a) Uniform Resource Locator

Explanation: URL = Uniform Resource Locator — web address of a resource on the Internet.

99. The first commercial web browser was —

(a) Internet Explorer (b) Mosaic (c) Netscape Navigator (d) Firefox / (e) Chrome

Answer: (c) Netscape Navigator

Explanation: Netscape Navigator (1994) was the first widely commercial web browser.

100. Tk = ?

(a) Indian Rupee (b) Bangladeshi Taka (c) US Dollar (d) Euro / (e) Yen

Answer: (b) Bangladeshi Taka

Explanation: ‘Tk’ is the abbreviation for the Bangladeshi Taka (BDT).