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March 26th, 2013, 06:13 AM   #1
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statistics in math

How many different ways can a president or vice president be chosen from a list of 20people?
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March 26th, 2013, 08:48 AM   #2
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Re: statistics in math

ops i get this one

for president, we can choice 20 ways
and the vice president, just 19 ways
multiplication of them = 20 * 19 = 380
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