21)

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

22)

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

23)

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

24)

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

25)

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

26)

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)

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

27)

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

28)

What is the average of the first 8 multiples of 8?

SSC Selection Post Matric 2022

A)

33

B)

34

C)

36

D)

32

29)

The average of 15 numbers is 30, while the average of 13 of these numbers is 32. If the remaining two numbers are equal, then what is each of the two numbers?

SSC Selection Post Matric 2022

A)

17

B)

31

C)

16

D)

34