krazykity krazykity

24-07-2018
Mathematics

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Pratt has 6 cards but can only bring 3 to show his friends. How many different choices of cards can he choose?

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lifelearner27 lifelearner27

24-07-2018

This is a combination (where order doesn’t matter) so we use the formula. 6!/3!(6-3)! Which equals 20

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