a and b are two positive integers ,such that least prime factor of a is 3and leat prime factor of b is 5 ,then calculate the least prime factor of (a+b)
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As 3 is the least prime factor of a and 5 is the least prime factor of b....
then a + b = 3 + 5 = 8
=> a + b =8
Now factors of 8 are 1 , 2 , 4 and 8
Here 2 is the only prime factor of 8...
=> 2 is the only least prime factor of 8 , i.e a + b
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