#### (i) Find the mean of the first six prime numbers.

(ii) Find the mean of the first seven odd prime numbers.

**Solution:**

(i) First 6 prime numbers are 2, 3, 5, 7, 11, 13

Here, n = 6

∴ Mean (x̄) = Ʃ x_{i}/n

= (2 + 3 + 5 + 7 + 11 + 13)/6

= 41/6

Hence, the mean of the first six prime numbers is 41/6.

(ii) First seven odd prime numbers are 3, 5, 7, 11, 13, 17, 19

Here, n = 7

∴ Mean (x̄) = Ʃ x_{i}/n

= (3 + 5 + 7 + 11 + 13 + 17 + 19)/7

= 75/7

Hence, the mean of the first six prime numbers is 75/7.

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