Question

if least prime factor of a is 3 and least prime factor of b is 7 then find the least least prime factor of
(a+b)

Answer 1

the least prime factor will be 2
because if a has 3 as smallest pime factor then it is an odd no. because it does not have 2 as a factor
and in b also .
if both the numbers are odd
then their sum will be even
which makes 2 as the least prime factor of a+b

Answer 2

Answer:

so here

3 and 7 both are odd and if we have there sum so its 10 i.e an even number

ohh but here 10 is not in the options so lets see what other are even

there is only 1 even in the options that is 2

so the final answer is 2

so mark it as brainliest

thank you

Step-by-step explanation:

dont forget to give thanks and stars

I am yours and yours  only "world helper"