1. If n is an even integer, which of the followings must be
an odd integer, [BKB (officer) – 2017]
A. 7n – 2 B. 5(n -2) C. (16n+24)/8 D. (6n+12)/3
Ans: C. (16n+24)/8
2. Tamim runs diagonally across a rectangular field twice
that has a length of 40 yards and a width of 30 yards. What is the length of
the diagonal, in yards, that Tamim runs? [BKB (officer) – 2017]
A. 50 yards B.70 yards
C. 100 yards D. 600 yards
Ans: A (Only diagonal not distance)
3. Solve the following inequality: -2x – 5 > x – 2 [BKB
(officer) – 2017]
A.x>1 B.x<-1
C x < 1 D. x > 3
Ans: B
4. In a class 78 students, 41 are taking French and 22 are
taking German. Of the students taking French or German, 9 are taking both
courses. How many students are not enrolled in either course? [BKB (officer) –
2017]
A.6 B.15 C.24 D. 64
Ans: C
5. If 3-6 × 7 + 6 ÷4 = x, what is the value of x ? [BKB
(officer) – 2017]
A. -3.75 B.
37.5 C. -37.5 D.-40.5
Ans: C
6. What is the next number in the series 3,18, 90, 360, ….?
[BKB (officer) – 2017]
A. 720 B.480
C. 1800 D.1080
Ans: D
7. If the hour hand of a clock is turned anticlockwise from
2 pm to 9 am, thoroughly how many degrees will it have turned? [BKB (officer) –
2017]
A.210 B.570
C.150
D.510
Ans: C
8. One third of a number is four times of eleven. What is
the half of that number? [BKB (officer) – 2017]
A .66 B.44 C.132 D.264
Ans: A
9. Average of 6 numbers is 8.5. When one number is
discarded, the avenge of the remaining numbers , becomes 7.2. What is the
discarded number? [BKB (officer) – 2017]
A 7.8 B. 6.5 C.16 D.15
ans: D
10. The business partners Rahim. Sohel and Karim agree to
divide their Total profit for a certain year in the ratio 2:5:8. If Sohel’s
profit was Taka 20,000 what was the total profit of the business for the year?
[BKB (officer) – 2017]
A. Taka 800 B.Taka
32,000 C. Taka 52,000 D. Taka 60,000
Ans: D
11. What is the value of x in the figure below? [BKB
(officer) – 2017]
A.36 B.5 C. 20 D. 10
Ans: B
12. Mr. A and Mr. B have a combined weekly salary of Taka
1,000. If salary of A is increased by 2.5 times and salary of B is increased by
1.5 times, the combined salary would be Taka 1600. What was the original salary
of B? [BKB (officer) – 2017]
A. Taka 100 B.Taka
250 C. Taka 900 D. Taka 1350
Ans: C
13. Jahir has 15 red balls; he gives Sami 3 balls. Sami now
has twice the number of balls Jahir has left. How many balls did Sami have at
the beginning? [BKB (officer) – 2017]
A.24 B.12 C. 27 D. 21
Ans: D
14. When a number is divided by 5, The remainder is 3. If
the square of this number is divided by 5 then What is the remainder? [BKB
(officer) – 2017]
A.5 B.4 C. 7 D. 1
Ans: B
15. The value of -3 -(-10) is how much greater than the value of -10 – (-3)? [BKB (officer) – 2017]
A.0 B. -7 C.7 D.14
Ans: D
16. If a photocopier makes 2 copies in 1/3 second, at the same rate, how many copies does it make in 4 minutes? [BKB (officer) – 2017]
A.1200 B. 24 C.144 D.1440
Ans: D
17. A pen is sold for Taka 48 with a 20% profit. What is the purchase price of the pen? [BKB (officer) – 2017]
A.32 B. 40 C.48 D.57.6
Ans: B
18. A bank pays simple interest rate of 8% on investment. If you invest Taka 5,000 in the bank, how much money would you get after 8 years? [BKB (officer) – 2017]
A. 9,255 B. 3,200 C. 5,320 D. 8,200
Ans: D (5000+3200 = 8200)
19. If 16^2x+4 =4^3x+3 then x = ? [BKB (officer) – 2017]
A.- 5 B. 1 C.0 D. – 1
Ans: A
20. If the length and width of a rectangular garden plot were each increased by 20% what would be the percent increase in the area of the plot? [BKB (officer) – 2017]
A. 20% B. 44, C. 144% D. 40
Ans: B
21. Find the slope of the line 5x – 5y = 7 [BKB (officer) – 2017]
A. 5 B.5/7 C. 1 D.7/5
Ans: C
22. If a man walks 14 kilometer/hour instead of 10 kilometer/hour, he would have walked 20 kilometers more. The actual distance travelled by him is: [BKB (officer) – 2017]
A. 30 kilometer B. 50 kilometer C. 80 kilometer D. 70 kilometer
Ans: b
23. In the coordinate plane, for which one of the following values of x would the graph of the equation y = x^3 -x^2-6x not touch thc x-axis? [BKB (officer) – 2017]
A.2 B.3 C. -2 D.0
Ans: D
24. How many 3-digit integers can be chosen such that none of the digits appear more than twice, none of the digits equal 0? [BKB (officer) – 2017]
A. 729 B. 720 C. 756 D. 504
Ans: B (9^3-9=720.)