The mean of first ten prime numbers is

12

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12.9

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13

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14

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Solution

The correct option is C $12.9$
First 10 prime numbers are $2, 3, 5, 7, 11, 13, 17, 19, 23, 29$
Formula used:
$A r i t h m e t i c m e a n = \frac{S u m o f g i v e n n u m b e r s}{T o t a l n u m b e r s}$

Apply the above formula, we get

Mean= $\frac{2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29}{10} = 12.9$

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Similar questions

12! + 13! + 14!

Column I	Column II
(a) The mean of first 10 odd number =	(p) 11.2
(b) The mean of first 10 even numbers =	(q) 10
(c) The mean of first 10 prime numbers =	(r) 11
(d) The mean of first 10 composite numbers =	(s) 12.9

Find the mean of:
(i) First eight natural numbers

(ii) First ten odd numbers

(iii) First five prime numbers

(iv) First six even numbers

(v) First seven multiples of 5.

(vi) Factors of 20

(vii) All prime numbers between 50 and 80

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