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Help. Find the value of each expression. 9P3 10C4 Download png

Zach Chandler

in Mathematics

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William Cain on October 18, 2018

NPr = n! / (n - r)! the number of permutations of 9, taken 3 at a time9P3 = 9! / (9 -3)!9P3 = 9! / 6!9P3 = 9 x 8 x 7 9P3 = 504 nCr = n! / r! (n - r)! the number of combinations of 10 taken 4 at a time.10C4 = 10! / 4! (10 - 4)! 10C4 = 10! / 4! 6! 10C4 =10 x 9 x 8 x 7 / 4 x 3 x 2 x 110C4 = 5040 / 2410C4 = 210


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