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 *

1 point

(a) 2

(b) 3

(c) 5

(d) 10

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Answer 1

Answer:

(a)2

Step-by-step explanation:

It can not be figured out as to what are the real values of n and k are, and only 2 can be observed as a factor there. Thus, the least prime factor of (a+b) will be clearly 2. Hence a + b is even (i.e a multiple of 2). Thus the least prime factor of 'a + b' is 2.

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Answer 2

2

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