1 . একটি ধনাত্মক সংখ্যার সাথে 4 যােগ করে যােগফলকে বর্গ করলে 625 হয়। সংখ্যাটি কত?

• A. 20
• B. 22
• C. 21
• D. 25

Answer: Option C

Explanation:

2 . If 10 students scored 61, how many students scored more than or equal to 62?

• A. 37
• B. 47
• C. 17
• D. 27
• D. None of them

Answer: Option E

Explanation:

3 . If each angle of a regular polygon is 162°, how many sides does it have?

• A. 12
• B. 10
• C. 8
• D. 16
• D. 20

Answer: Option E

Explanation:

4 . If 62 =34 + 4x. what is x ?

• A. x =16
• B. x = -16
• C. x =7
• D. x =5

Answer: Option C

Explanation:

5 . International efforts to protest animals often aim to prevent animals from going exist or losing their natural habitats. many countries prohibit imports of ivory through laws that Many countries prohibit imports of ivory through laws that commonly include the African Elephant conversion Act of 1989. but ivory remains in demand in. various parts of the world. According to a 2013 report from the Los Angeles Times in 2012 at least 25,000 African elephants were slaughtered by criminal gangs eager to market the lucrative ivory from their tusk. The poachers' take has risen to alarming levels over the last twelve years. with about one in 17 wild elephants being fallen in 2017, by some estimate Elephant populations have fallen from 5 million a century ago to fewer than 420,000 today. The situation is equally worse for other species . In united States ,623 animal species are listed mammalian specs such a bear, foxes ocelots, otters panthers, rats and wales. The International Union for conversation of Nature (IUCN) Produces a red list of animal and plant species that are endangered around the world However the mountains gorillas in Eastern Africa are making a comeback with a 26 percent increase in population after many years of conversation efforts. Such success are due of the fact that there are most protected areas in the world, including wildlife refuges and reserves. Producing res list can help to-

• A. motivate the hunters
• B. combat the situation
• C. save the sorld
• D. rescue African animals

Answer: Option C

Explanation:

6 . The profit earned after selling an article for Tk. 3,362 is the same as the loss incurred after selling the article for Tk. 2,36. At what selling price will a trader make a 20% profit on this article?

• A. 4639.4
• B. 4769.6
• C. 4830.8
• D. None of these

Answer: Option D

Explanation:

7 . A company's profits have doubled for each of the last 5 years . If the total profits for the last 5 years were TK. 62 million , what were the profits in the first year ?

• A. 1
• B. 2
• C. 4
• D. 5
• D. 6

Answer: Option B

Explanation:

8 . 0.9623 - 31 = কত?

• A. -30.0377
• B. -29.0377
• C. -32.8246
• D. -31.0377

Answer: Option A

Explanation:

9 . The average monthly income of P and Q is Tk. 5050. The average monthly income of Q and R is Tk. 6250 and the average monthly income of P and R is Tk. 5200. The monthly income of P is Tk. -

• A. 4000
• B. 3500
• C. 4050
• D. 5000

Answer: Option A

Explanation:

10 . The addition of 10 digits is 462. The average of their first four digits is 52 and the average of last 5 digits is 38. What is the fifth digit?

• A. 64
• B. 60
• C. 50
• D. 62

Answer: Option A

Explanation:

11 . In what ratio must tea at Tk. 62 per kg be mixed with tea at Tk. 72 per kg so that the mixture must be worth Tk. 64.50 per kg?

• A. 3 : 1
• B. 3 : 2
• C. 4 : 3
• D. 3 : 5

Answer: Option A

Explanation:

12 . Divide Rs.5625 among A, B and C so that A receive 1/2 as much as B & C and B 1/4 of what A and C together receive?

• A. 1125, 1870, 2630
• B. 2625, 1875, 1125
• C. 1875, 1125, 2625
• D. 6

Answer: Option C

Explanation:

13 . In 1962, the story of Helen Keller's life ____ into a film , The Miracle Worker .

• A. made
• B. was made
• C. makes
• D. has been made

Answer: Option D

Explanation:

14 . Which is the odd number out in the series: 462, 385, 198, 253, 781, 594?

• A. 683
• B. 198
• C. 781
• D. 594

Answer: Option C

Explanation:

15 . 3182596 is to 65283 and 6742835 is to 53476. Therefore 746258 is to?

• A. 85674
• B. 86547
• C. 85647
• D. 86574

Answer: Option C

Explanation:

16 . The profit earned after selling an article for Tk.3,362 is the same as the loss incurred after selling the article for Tk.2,346. At what selling price will a trader make a 20% profit on this article?

• A. 4639.4
• B. 4769.6
• C. 4830.8
• D. None of these

Answer: Option D

Explanation:

17 . A number when divided by 627 leaves a remainder 43. By dividing the same number by 19, the remainder will be-

• A. 32
• B. 43
• C. 13
• D. 5

Answer: Option D

Explanation:

18 . The population of town increased from 1,75,000 to 2,62,500 in a decade. The average percentage increase of the population per year is --

• A. 4.7%
• B. 5%
• C. 6%
• D. 8.55%
• D. None of these

Answer: Option B

Explanation:

19 . If the mean of numbers 28, x, 42, 78 and 104 is 62, what is the mean of 48,62,98,124 and x?

• A. 58
• B. 390
• C. 78
• D. 310

Answer: Option C

Explanation:

20 . Find the compound interest on Tk. 15,625 for 9 months at 16% per annum compounded quarterly.

• A. Tk. 1851
• B. Tk. 1941
• C. Tk. 1951
• D. Tk. 1961

Answer: Option C

Explanation:

21 . There are two stations of length 162 meters and 120 meters respectively . A train takes 15 seconds to pass first station and 18 seconds to pass another station . Determine the length of the train ?

• A. 90 m
• B. 70 m
• C. 100 m
• D. 95 m

Answer: Option A

Explanation:

22 . 6423+62512=3k

• A. $9\frac{2}{3}$
• B. $11\frac{1}{3}$
• C. $12\frac{2}{5}$
• D. $13\frac{2}{3}$

Answer: Option C

Explanation:

23 . 62

• A. $6$একক
• B. $12$একক
• C. $20$একক
• D. $24$একক

Answer: Option B

Explanation:

24 . 2×3=812,4×5=1620

• A. 2428
• B. 2442
• C. 42
• D. 1214

Answer: Option A

Explanation:

25 . The electricity bill of a certain establishment is partially fixed and partially varies as the number of units of electricity consumed. Wen in a certain month 540 units are sonsumed. the bill is TK 1800. In another month 620 units are consumed are the bill is Tk 2040. Inayet another month if 500 units are consumed what would be the bill (in Tk) for that month?

• A. 1950
• B. 1560
• C. 1840
• D. 1680

Answer: Option D

Explanation:

26 . A train takes 18 sec to pass completely through a station 162m long and 15 seconds through another station 120m long.The length of the train-

• A. 70m
• B. 80m
• C. 90m
• D. 100m

Answer: Option C

Explanation:

27 . একটি ধনাত্মক সখ্যার সাথে 4 যোগ করে যোগফলকে বর্গ করলে 625 হয়। সখ্যাটি কত?

• A. 20
• B. 22
• C. 21
• D. 25

Answer: Option C

Explanation:

28 . The value of a machine is Tk.6250. Its value decreases by 10% during the first year, 20% during the second year and 30% during the third year. What will be the value of the machine after 3 years?

• A. 2650
• B. 3050
• C. 3150
• D. 3750

Answer: Option C

Explanation:

29 . The average monthly income of P and Q is Tk.5050. The average monthly income of Q and R is Tk.6250 and the average monthly income of P and R is Tk.5200. Calculate the monthly income of P.

• A. Tk.4000
• B. Tk.6100
• C. Tk.6400
• D. Tk. 16500

Answer: Option A

Explanation:

30 . log 5 625= কত?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option D

Explanation:

31 . The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 :2 . The smaller number is -

• A. 30
• B. 40
• C. 60
• D. 84

Answer: Option B

Explanation:

32 . Sum of 10 integer is 462. The average of first 4 number is 52 and the average of last 5 number is 38. What is the fifth number ?

• A. 64
• B. 60
• C. 50
• D. 62

Answer: Option A

Explanation:

33 . 3=3

• A. 6
• B. 24
• C. 18
• D. 36

Answer: Option D

Explanation:

34 . 3log3625+log293-2log16125

• A. ${\log }^2$
• B. ${\log }^3$
• C. ${\log }^5$
• D. ${\log }^7$

Answer: Option A

Explanation:

35 . 226Ra এর অর্ধায় 1620 বছর। কত বছর তেজস্ক্রিয় নিঃসরণের পর এক চতুর্থাংশ অবশিষ্ট থাকবে?

• A. 810
• B. 1620
• C. 3240
• D. 405

Answer: Option C

Explanation:

36 . কোনো অর্গান থেকে নি:সৃত সুরগুলোর কম্পাঙ্ক 256, 268, 512, 620, 768, 1020, 1280, 1992 ও 2048 Hz হলে নিচের কম্পাঙ্কগুলোর মধ্যে মূল সুরের অষ্টক কোনটি?

• A. 256 Hz
• B. 268 Hz
• C. 2048 Hz
• D. 512 Hz

Answer: Option D

Explanation:

37 . x-262x-3

• A. 2, 3
• B. 2,-6
• C. 2,-3
• D. -1,6

Answer: Option D

Explanation:

38 . যদি তড়িৎপ্রবাহের সমীকরণ I (t) =20 sin ( 628t) হয়, তাহলে তড়িৎ এর কম্পাঙ্ক ও rms মান কত?

• A. 100Hz & 14.14 A
• B. 200 Hz & 15 A
• C. 100 Hz and 20 A
• D. 50 Hz and 14. 14 A

Answer: Option A

Explanation:

39 . একটি কার্ণো ইঞ্জিনের উৎসের তাপমাত্রা 400K। এই তাপমাত্রায় উৎস থেকে ইঞ্জিনটি 836J তাপ গ্রহন করে এবং সিংকে 627J তাপ বর্জন করে। ইঞ্জিনটির দক্ষতা কত ?

• A. 25%
• B. 28.90%
• C. 26.80%
• D.

Answer: Option A

Explanation:

40 . একটি দিক পরিবর্তী তড়িৎ প্রবাহের সমীকরন i=30 sin 628t হলে এর কম্পাঙ্ক কত?

• A. 100 Hz
• B. 314 Hz
• C. 628 Hz
• D. 120 Hz

Answer: Option A

Explanation:

41 . প্রতিটি 60 W -এর 5 টি বাতি কয়েক ঘন্টা করে জ্বালানো হয়। প্রতি ইউনিট বিদ্যুৎ মূল্য 3.00 টাকা এবং মাসে ( 30 দিন) বিদ্যুৎ বিল 162.00 টাকা হলে দৈনিক বিদ্যুৎ ব্যবহারের সময়কাল -

• A. 10 h
• B. 6 h
• C. 8 h
• D. 4 h

Answer: Option B

Explanation:

42 . একটি 'কার্নো' ইঞ্জিনের উৎসের তাপমাত্রা 400 K । এই তাপমাত্রায় উৎস থেকে এই ইঞ্জিন 836 J তাপ গ্রহণ করে আর সিংকে 627 J তাপ বর্জন করে। তাহলে এ ইঞ্জিনের দক্ষতা -

• A. 25%
• B. 26.8%
• C. 28.9%
• D. 36%

Answer: Option A

Explanation:

43 . The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 : 2. What is the smaller number?

• A. 40
• B. 30
• C. 60
• D. 80

Answer: Option A

Explanation:

44 .  যদি JAHANGIRNAGAR-3252169012620 হয় তবে 2205 × 3 =?

• A. GNHR
• B. GGNH
• C. JJGN
• D. JNGH

Answer: Option B

Explanation:

45 . The smallest number added to 680621 to make the sum a perfect square is:

• A. 4
• B. 5
• C. 6
• D. 8

Answer: Option A

Explanation:

46 . If k is an integer and k = 462/n, then which of the following could be the value of n?   

• A. 4
• B. 5
• C. 9
• D. 22

Answer: Option D

Explanation: