Question

if least prime factor of a is 3 and least prime factor of b is 7, what is least prime factor (a+b)?

Answer 1

Since 3 is a least prime factor of a, we can say that a is odd. Similarly, 7 is the least prime factor of b, making it odd too. So the sum a+b is even and hence it's least prime factor is 2.

plz mark as brainliest plz

Answer 2

a+b=3+7=10
then prime factor of 10 is 2, 5