Question

The average of 4 distinct prime numbers a, b, c, d is

35, where a ˂ b ˂ c ˂d. a and d are equidistant from 36 and b and c are equidistant from 34 and a, b are equidistant from 30 and c and d are equidistant from 40. The difference between a and d is

A 30

B 14

C 21

D Cannot be determined

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Question

The average of 4 distinct prime numbers a, b, c, d is

Solution

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