1.

The LCM of a pair of numbers is 4 and their sum is 6.What are the number?

Answer»

There are only two POWERS of two that can be added to give 6: 2 + 4. The prime factorization of 2 is 2 (since 2 is prime) and the prime factorization of 4 is 2*2, and the LCM of 2 and 4 is 2*2, or 4. 2 and 4 are your numbers.



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