Common divisor

Revision as of 13:11, 23 September 2007 by 1=2 (talk | contribs)

A common divisor of two or more integers is a divisor of all those integers. For any set of positive integers, there is a greatest common divisor.

Problems

Introductory

Find the greatest common divisor of 12, 99, and 111.

Intermediate

Prove that the greatest common divisor of two numbers times the least common multiple of two numbers is 1.

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