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a and b are two positive integers such that the least prime factor of a is 3 and the least prime of b is 5.Then calculate the least prime factor of a+b

Posted by Amit Yadav 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Raj Dhali 6 years, 11 months ago

a and b have least prime factor an odd no. Hence both are odd no.so,a+b=odd+odd which is even.all even have least prime factor 2.hence least prime factor of a+b is 2

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CBSE > Class 10 > Mathematics