কৃষি ব্যাংক 'সিঃ অফিসার' (Math Part) সমাধানঃ

22 Jan 2017

Bangladesh Krishi Bank Sr. Officer-2017

Math Part:

1. Which number is the odd one in Oval A and Oval B respectively?

Ans: 42,52

2. Look at the series: 31, 29, 24, 22, 17, __ What number should come next?

Ans: 15

3. A watch which gains 5 seconds in 3 minutes was set right at 7am. In the afternoon on the same day,  when the true time is 1 pm, the watch should indicate?

Ans: 1:10 pm

4. What is the purchase price of an article if the profit for selling it for Tk. 250 is 25%?

Ans: Tk. 200

5. Rectangular floor X and Y have equal area. If floor X is 12 feet by 18 feet, and floor Y is 9 feet wide. What is the length of floor Y in feet?

Ans: 24

6. The sum of prime numbers that are greater than 60 but less than 70 is?

Ans: 128

7. 0.1 + (0.1)^2 + (0.1)^3 = ?

Ans: 0.111

8. A player’s average test score on 4 tests is 78. What must be his score on a 5th test for average score on 5 tests to be 80?

Ans: 88

9. √{(16)(20)+(8)(32)} = ?

Ans: 24

10. If Lalon loses 8 pounds, he will weigh twice as much as his sister. Together they now weigh 278 pounds.  What is Lalon’s present weigh in pounds?

Ans: 188

11. If a square mirror has a 20 inch diagonal, what is the approximate perimeter of the mirror, in inches?

40///50///60///80 (Correct Ans. is 56.56)

12. If n = 3^8-2^8 , which of the following is NOT a factor of n?

Ans: 35

13. In a town, 64 percent of the population is employed, and 48 percent of the population is employed males. What percentage of the employed people in that town is female?

Ans: 25%

14. If (4-x)/(2+x) = x, what is the value of x^2 + 3x -4?

Ans: 0

15. During a certain season, a team won 80% of its first 100 games and 50% of its remaining games. If the team won 70% of its games for the entire season, what was the total number of games the team played?

Ans: 150

16. Of the 30 applicants for a job, 14 had at least 4 years experience, 18 had degrees and 3 had less than 4 years experience and did not have a degree. How many of the applicants had at least 4 years experience and a degree?

Ans: 5

17. What is the difference between sixth and fifth terms of the sequence 2,4,7, ___ whose n^th term is n + 2^(n-1)

Ans: 17

18. If a two digit positive integer has its digits reversed the resulting integer differs from the original by 27. By how much does the two digits differ?

Ans: 3

19. If x percent of 40 is y, then 10x equals?

Ans: 25y

20. If (0.0015*10^m)/(0.03*10^k) = 5*10^7 then m-k = ?

Ans: 9

21. If 3√x = 2√3 , what is the value of x?

Ans: 1.33

22. If a and b are positive real numbers, then (a^0 - 3b^0)^5 = ?

Ans: -32

23. 3^x + 3^x + 3^x = ?

Ans: 3^(x+1)

.....Some quetions are missing...we are sorry....

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