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Mathematics 7 Online
OpenStudy (linn99123):

What is the value of 10C3? A. 30 B. 120 C. 720 D. 1000 i chose C @AnswerMyQuestions

OpenStudy (anonymous):

???

OpenStudy (cwrw238):

10 * 9* 8 -------- 3 * 2* 1

OpenStudy (anonymous):

120

OpenStudy (linn99123):

@cwrw238 i got it right then?

OpenStudy (cwrw238):

No its B 720 / 6 = 120

OpenStudy (linn99123):

I suck at math T^T

OpenStudy (cwrw238):

these are combinations not permutations so the order does not matter the formula is nCr = n! ------- (n-r)! r! but the quick way to do it is as i did

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