4. a and b are two positive integers such that the least prime factor of a is 3 and the least prime factor of b is 5. Then, the least prime factor of (a+b) is
a)2
b)3
c)5
d)8
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Answer:
least prime factor of A = 3
least prime factor of B = 5
to find = ( A+B) factors
A+B = PRIME FACTOR A + PRIME FACTOR B
- X+ X = 3+5
= 8
Step-by-step explanation:
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