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Question

The mean of prime numbers between 20 and 30 is :

A
21
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B
26
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C
25
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D
27
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Solution

The correct option is B 26
The prime numbers between 20 and 30 are 23,29

Mean of the data set is the average of values in the data set.

Therefore the mean of the prime numbers is 23+292=522=26

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