Date: 11/08/2001 at 18:37:33 From: Sam Frey Subject: Multiples What is the most common multiple of 13 and 7? I have no clue what they are even talking about - this is the question my grandson called me about asking for help. Maybe I've forgotten more than I ever knew for I don't recall learning how to do this and the only possibility I can even think of is 1. What say you? Thanks!
Date: 11/08/2001 at 19:59:47 From: Doctor Terrel Subject: Re: Multiples Hi Sam, First, I think what is being asked for here is the "least" common multiple. Next, the "multiple of a number" is best explained by an example or two. The multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, etc. The multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, etc. Then the common multiples of 4 and 6 are 12, 24, 36, 48, ... [that is, those showing up in BOTH lists]. Finally, the least common multiple of 4 and 6 is 12, as it's the smallest one. Try my Web page for more about this: LCM's via the Calculator - Terrel Trotter http://www.geocities.com/ttrotter3/mom.html Good luck. - Doctor Terrel, The Math Forum http://mathforum.org/dr.math/
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994-2013 The Math Forum