71)

The average of eleven consecutive positive integers in increasing order is 251. If the next four odd numbers are included, then what is the average of all the numbers?

SSC Selection Post Matric 2022

A)

253

B)

253.4

C)

254

D)

252.6

72)

A post office received 54 parcels with an average weight of 125g. The average weight of 52 parcels is 125.5g. Among the remaining two parcels, one weighs one-third of the other. What is the difference between the weights (in g) of these two parcels?

SSC Selection Post Matric 2022

A)

112

B)

96

C)

106

D)

108

73)

In an examination, the average score of a student was 77.6. If he would have got 27 more marks in mathematics, 10 more marks in computer science, 13 more marks in history, and retained the same marks in the other subjects, then his average score would have been 82.6. How many subjects were there in the examination?

SSC Selection Post Matric 2022

A)

10

B)

12

C)

11

D)

9

74)

A library has an average of 219 visitors on Saturdays and an average of 281 on other weekdays. The average number of visitors per day in a month of 31 days, beginning with a Friday, is:

SSC Selection Post Matric 2022

A)

277

B)

273

C)

271

D)

269

75)

The average weight of a certain number of children in a group was 37 kg. If 12 children of average weight 38.5 kg joined the group, then the average weight of all the children increased by 0.45 kg. The number of children, initially, in the group was:

SSC Selection Post Matric 2022

A)

23

B)

28

C)

18

D)

13

76)

The average of x occurring 5 times and y occurring 7 times is 37. Also, the average of x occurring 7 times and y occurring 5 times is 35. The value of \(\frac{x}{6}\) is:

SSC Selection Post Matric 2022

A)

8

B)

5

C)

4

D)

6

77)

The average weight of some children in a group was 42 kg. When 5 children of average weight 48 kg join the group or 5 children of average weight 37 kg leave the group, the average weight of children in both cases remains equal. How many children were there in the group initially?

SSC Selection Post Matric 2022

A)

35

B)

45

C)

25

D)

55

78)

The average of 9 consecutive numbers is 20. The smallest of these numbers is:

SSC Selection Post Matric 2022

A)

12

B)

10

C)

16

D)

20

79)

What is the average of prime numbers lying between 7 and 37?

SSC Selection Post Matric 2022

A)

\(20\frac{3}{7}\)

B)

\(18\frac{3}{4}\)

C)

\(20\frac{1}{3}\)

D)

\(19\frac{2}{3}\)

80)

The average of the first three numbers out of four numbers is 18 and that of the last three numbers is 20. If the last number is 25, what is the first number?

SSC Selection Post Matric 2022

A)

28

B)

36

C)

35

D)

19