Question

And b are two positive integers such that the least prime factor of b is 5

Answer 1

if a and b are 2 positive inger

Answer 2

Answer:

Step-by-step explanation:

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Least prime factor being 3 or 5 means that 2 is not a factor. So the numbers are both odd.

Odd + odd = even for sure. So for a+b we have 2 as a prime factor.

Since 2 is the smallest prime, answer is 2.