Posted by **Shohanur** on Thursday, September 26, 2013 at 9:22pm.

A. Find 3 pairs of numbers for which the least common multiple equals the product of the the 2 numbers.

B. Look at the pairs of numbers you found in part a. What is true about all 3 pairs of numbers?

- math -
**Reiny**, Thursday, September 26, 2013 at 9:27pm
(3,4) , (2,7) , (12, 199)

for the A. to be true , the numbers have to be relatively prime, that is, they cannot have a common factor between them.

counter-example

(6,20)

least common multiple is 60 , which is not the product of the 2 numbers, since they have a common factor of 2 between them.

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