Question about Texas Instruments TI-30XA Calculator

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When i am trying to do the function... 52 choose 56 (52 2nd nCr 56 =) i keep getting 0.. the nCr button seems to not be working properly

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You're getting the correct answer. There are no ways of getting 56 items out of 52. Think about dealing 56 cards out of a deck of 52. It can't be done.

Now, if you want to pick 52 items out of 56, you can press
5 6 2nd nCr 5 2 =
and get the answer.

Posted on Nov 10, 2010

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