if a and b are two positive integer such that the least prime factor of a is 3 and the least prime factor of b is 5. then find the least prime factor of (a+b) ?
Asked by Saranya Krishnamurthy | 24th Apr, 2014, 02:12: PM
Since the least prime factor of all even numbers is 2. So number 'a' can not be a even number which means 'a' is multiple of 5. Thererfore, 5 is the least factor of a+b.
Answered by | 26th Apr, 2014, 12:34: PM
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