20.The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:

A.40%

B.42%

C.44%

D.46%

A.9944

B.9988

C.9768

D.8888

.

22.Which of the following is a prime number ? A.33

B.93

C.81

D.97

*a*and

*b*are odd numbers, then which of the following is even ?

A.a+b

B.ab

C.a+b+1

D.ab+2

.

24.The sum of how may tersm of the series 6 + 12 + 18 + 24 + ... is 1800 ? A.16

B.24

C.20

D.18

E.22

25.What decimal of an hour is a second ?

A..0025

B..00027

C..0256

D..000126

A.0.172

B.17.2

C.1.72

D.172

27.What is the probability of getting a sum 9 from two throws of a dice?

A.1/6

B.1/9

C.1/8

D.1/12

A.1/3

B.7/19

C.9/21

D.3//4

E.8/21

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