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%
21.The largest 4 digit number exactly divisible by 88 is:
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
23.If 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
26.If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?
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
28.In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
A.1/3
B.7/19
C.9/21
D.3//4
E.8/21