Investment Corporation of Bangladesh (ICB)

21. Find the largest number of four exactly divisible by 12, 15, 18 and 27.

(a) 9620               (b) 9720              (c) 9820                   (d) 9920

Ans. (b) 9720

22. When 0.232323 ——————- is converted into a fraction. Then the result is –

(a) {1 \over 5}                        (b) {2 \over 9}

(c) {23 \over 99}                  (d) {23 \over 100}

Ans. (c) {23 \over 99} 

23. By how much is three-fifth of 350 greater than four-seventh of 210?

(a) 95             (b) 110              (c) 120                   (d) None of these

Ans. (d) None of these

24. Evaluate: \sqrt {41 - \sqrt {21 + \sqrt {19 - \sqrt 9 } } }

(a) 2             (b) 5              (c) 6                   (d) 6.4

Ans. (c) 6

29. A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined them after six months and invested amount equal to that of B In what proportion should the profit at the end of one year be distributed among A, B and C?

(a) 3 : 5 : 2             (b) 3 : 5 : 5              (c) 6 : 10 : 5                   (d) None of these

Ans. (c) 6 : 10 : 5

30. If 17 labourers can dig a ditch 26 m long in 18 days, working 8 hours a day; how many more labourers should be engaged to dig a similar ditch 39 m long in 6 days, each labourer working 9 hours a day?

(a) 34             (b) 51              (c) 68                   (d) 85

Ans. (b) 51