Question

The mean of prime numbers between 20 and 30 is: (A) 21 (B) 26 (C) 25 (D) 27

Answer 1

b) 26 is the answer
the prime numbrs btween 20 and 30 are
23 and 29
mean=sum of observations÷total no observations
(23+29)÷2=52÷2
=26

HOPE IT HELPED!!!

Answer 2

The prime numbers between 20 and 30 are:
23, 29

Hence,

Sum of the given quantities = 23 + 29
OR Sum = 52

And,
Number of quanties = 2

We know that,

Mean = Sum of given quantities / Number of quantities

Substituting the values in the above discussed formula,

Mean = 52 / 2

Performing simple division = 26

Therefore, we conclude that the correct answer is option (B)