Practice Questions on Number System
Aptitude Questions and Answers

Q1.

A number when divided by a divisor leaves a remainder of 24.

When twice the original number is divided by the same divisor, the remainder is 11. What is the value of the divisor?

A.

13

B.

59

C.

35

D.

37

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Q2.

The product of 4 consecutive even numbers is always divisible by:

A.

600

B.

768

C.

864

D.

384

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Q3.

What is the minimum number of square marbles required to tile a floor of length 5 metres 78 cm and width 3 metres 74 cm?

A.

176

B.

187

C.

540

D.

748

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Q4.

What number should be subtracted from $x^3+ 4x^2- 7x + 12$, if it is to be perfectly divisible by $x + 3$?

A.

42

B.

39

C.

13

D.

None of these

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Q5.

Find the remainder when $2^{89}$ is divided by $89$?

A.

1

B.

2

C.

87

D.

88

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