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
(6) 3
(c) 5
(d) 10​

Answer 1

Answer:

(a) 2

Step-by-step explanation:

• 3 is the least prime factor of 9
• 7 is the least prime factor of 7
• a=9 b=7
• a+b = 9+7= 16
• And 2 is the least prime factor of 16