Q. 39

# Match the followi

(A) (q),

(B) (r),

(C) (s),

(D) (p)

Explanation:

(A) First 10 odd numbers are = 1, 3, 5, 7, 9, 11, 13, 15, 17, 19

Sum of these numbers = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 100

n = 10

Mean = 100/10 = 10

(B) First 10 even numbers are = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

Sum of these numbers = 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 = 110

n = 10

Mean = 110/10 = 11.0

(C) First 10 prime numbers are = 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Sum of these numbers = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129

n = 10

Mean = 129/10 = 12.9

(D) First 10 composite numbers are = 4, 6, 8, 9, 10, 12, 14, 15, 16, 18

Sum of these numbers = 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 112

n = 10

Mean = 112/10 = 11.2

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