Question

a and b are two
two positive integers such that the
least prime factor of a is 3 and
the least prime facetor of b is 5 then
the least prime factor of a+b is
(a) 2
(b) 3
(c) 5
(d) 8​

Answer 1

Answer:

Given that, a is a positive integer and 3 is the least prime factor of a. Also, b is a positive integer and 5 is the least prime factor of b. Since least prime factor of a is 3, it means that a is an odd number. So, if a is even then 2 is the least prime factor of a.

Step-by-step explanation:

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Your answer is (b)3