31.
The avearge score of a cricketer for ten matches is 38.9 runs. If the average
for the first six matches is 42. Then find the average for the last four
matches?
A.
33.25 B. 33.5
C. 34.25 D. 35
32.
Find the average of all prime numbers between 30 and 50.
A.39 B.39.5
C.39.8 D.40
33.
Find the average of first 40 natural numbers.
A.20.5 B.15
C.20 D.20.8
34.
The average of runs of a cricket player of 10 innings was 32. How many runes
must be made in his next innings so as to increase his average of runs by 4?
A.72
B.74
C.70
D.76
View Answer With Explanation
35.
A pupil's marks were wrongly entered as 83 instead of 63. Due to that the
average marks for the class got increased by half (1/2). The number of pupils
in the class is:
A. 10 B. 20
C. 40 D. 73
36.
The average age of P, Q, R and S is 30 years. How old is R?
I.
The sum of ages of P and R is 60 years.
II. S is 10 years younger than R.
A. I alone sufficient while II alone not
sufficient to answer
B. II alone sufficient while I alone not
sufficient to answer
C. Either I or II alone sufficient to
answer
D. Both I and II are not sufficient to
answer
E. Both I and II are necessary to answer
37. The average of five numbers id 27. If one
number is excluded,the average becomes 25. The excluded number is
A. 25 B.
27
C.
30 D. 35
38. The batting average for 40 innings of a
cricket palyer is 50 runs. His highest score exceeds his lowest score by 172
runs. If these two innings are excluded, the average of the remaining 38
innings is 48 runs. The highest score of the player is
A. 165
runs B. 170 runs
C.
172 runs D. 174 runs
39. Find the average of first 20 multiples of
7.
A.70 B.73
C.73.5 D.72.5
40. The average weight of 10 oarsmen in a
boat is increased by 1.8 kg when one of the crew, who weighs 53kg is replaced
by a new man. find the weight of the new man.
A.70kg B.71kg
C.75kg D.80kg
