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p and q are two positive integers such that the least prime factor of p is 3 and the least prime factor of q is 5 . Find the least prime factor of (p + q).A. 2B. 3C. 5D. 8 |
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Answer» Correct Answer - A Clearly, 2 is neither a factor of a nor that of b. a and b are both odd. Hence , (a +b) is even. least prime factor of ( a+b) is 2. |
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