The mean of the square of first 11 natural numbers is _______.

(a)

26

(b)

46

(c)

48

(d)

52

The mean of the first 10 prime numbers is ___________

(a)

12.6

(b)

12.7

(c)

12.8

(d)

12.9

The median of the first 10 whole numbers is ______________

(a)

4

(b)

4.5

(c)

5

(d)

5.5

The mean of a set of numbers is \(\bar X\). If each number is multiplied by z, the mean is _______.

(a)

\(\bar X + z\)

(b)

\(\bar X-z\)

(c)

z\(\bar X\)

(d)

\(\bar X\)

Find the mean of the prime factors of 165.

(a)

5

(b)

11

(c)

13

(d)

55