Find the mean of prime numbers between 30 and 50

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39.8

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40.5

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43.5

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Solution

The correct option is B
39.8

The prime numbers between 30 and 50 are 31 , 37 ,41,43,47

Hence Mean = $\frac{s u m o f a l l t h e o b s e r v a t i o n s}{N u m b e r o f o b s e r v a t i o n}$

= $\frac{31 + 37 + 41 + 43 + 47}{5}$

= $\frac{199}{5}$

= 39.8

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Similar questions

30

50

The mean of prime numbers between 20 and 30 is:

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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