Let n be an integer from 9 to 38. For how many values of n will be n/5 be prime

Question

Mathematics

Anabella Whitney

29 August, 00:08

Let n be an integer from 9 to 38. For how many values of n will be n/5 be prime

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Answers (1)

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Rolando · Answer 1

Let p = prime number

n = {9, 10, 11, ... 37, 38}

n/5 = p

n = 5p

first few primes

2,3,5,7, ...

times 5

10,15,25,35, ...

n can be 4 values to make n/5 = prime number