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Carina has 12 pairs of shoes. She wants to choose 3 pair to take with her on a short vacation. How many choices of 3 pairs of shoes could she make?

 Nov 14, 2019
 #1
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12c3=220

 Nov 14, 2019
 #2
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C(12, 3) = (12*11*10)/3! = 220

 Nov 14, 2019

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