SOLUTION: I would like to select 3 paperback books from a list of 11 books to take on vacation. How many different sets of three books can I choose?

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Question 1014411: I would like to select 3 paperback books from a list of 11 books to take on vacation. How many different sets of three books can I choose?
Found 2 solutions by stanbon, ikleyn:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I would like to select 3 paperback books from a list of 11 books to take on vacation. How many different sets of three books can I choose?
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Ans: 11C3 = 11!/[(11-3)!*3!] = 11*10*9/1*2*3 = 165 sets of 3
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Cheers,
Stan H.
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Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.
I would like to select 3 paperback books from a list of 11 books to take on vacation. How many different sets of three books can I choose?
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C%5B11%5D%5E3 = %2811%2A10%2A9%29%2F%281%2A2%2A3%29 = 11*5*3 = 165,
the number of combinations of 11 objects taken 3 at a time.

See the lesson Introduction to Combinations in this site.