Complementary counting: Difference between revisions
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'''Complementary counting''' is counting what we don't want, and substracting that from the total number of possibilities. A big hint that complementary counting may lead to a quick solution is the phrase "at least". | '''Complementary counting''' is [[counting]] what we don't want, and substracting that from the total number of possibilities. A big hint that complementary counting may lead to a quick solution is the phrase "at least". | ||
Revision as of 11:04, 23 July 2006
Complementary counting is counting what we don't want, and substracting that from the total number of possibilities. A big hint that complementary counting may lead to a quick solution is the phrase "at least".
Examples
Introductory
