SOLUTION: How can you use nCr? What are its difference from nPr?
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Question 575591
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How can you use nCr? What are its difference from nPr?
Answer by
stanbon(75887)
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How can you use nCr? What are its difference from nPr?
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That's a relatively long story.
Please use Google to search for "statistics combinations permutations".
Cheers,
Stan H.