Question

If 3 is the least prime factor of number a and 7 is the least prime factor of number b,then the least prime factor of a+b, is
(a) 2
(b) 3
(c) 5
(d) 10

Answer 1

Answer:

Among the given options option (a) 2 is correct.

Step-by-step explanation:

Given :  

Least prime factor of ‘a’ is 3 and least prime factor of ‘b’ is 7.

sum of least prime factors of a and b = (a + b) = 3 + 7 = 10

(a + b) = 10

Least factor of 10 is 2

Hence, the least factor of (a + b) is also 2.

HOPE THIS ANSWER WILL HELP YOU…

Answer 2

Answer:

the least prime factor of a+b is (d) 10

Step-by-step explanation:

Because a+b = 3+7 = 10.

Hope it helps.