Question 721888
In how many ways can a committee of 5 be made from a group of 12?
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The 1st choice is 1 of 12
then 1 of 11, then 10, 9 & 8
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12*11*10*9*8 = 95040
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But, choosing ABCDE is the same as ADBEC, or any other order
So it's 95040/(5*4*3*2*1) = 792 ways
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It's called "without ordering"