A cooking club has 12 members. how many ways can they select a president and vice president from among the members?
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We use he formula for the permutations of n thing taken r at a time is the factorial symbol
Substitute 12 for n and 2fir r we have
12/10 = 12×11=132
Substitute 12 for n and 2fir r we have
12/10 = 12×11=132
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