nPr in math stands for permutation :)
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nCr = nPr/r!
Using a TI-84 Plus calculator, enter the following: 10, MATH, then arrow over (>>>)to PRB, then arrow down to (2: nPr), ENTER, 3, ENTER. The answer is: 720.
nPr(8,6) = 20160
A permutation is the rearrangement of objects or symbols into distinguishable sequences.You can use the formulas. nPr=n! / (n-r)!where n the set from which elements are permuted and r is the size of each permutation (! is the factorial operator)For example: How many ways can you rearrange the word math? 4P4=4!/(4-4)! 4P4=4!/1 4P4=24
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