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1.Use formula. ncr = n!/ (r!* (n-r)!) Where, n = total number of object. r = objects from a group. 2. calculate the factorial using the formula. 3. subtract n from r than do factorial of that obtained

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NCR formula is utilized to find the count of the ways in which r items are selected from n items where the order is not kept in mind. It is represented as given below. ^nC_ {r}=\frac {^nP_ {r}}

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In mathematics, the formula of combination is represented as: C r n = n! r! n - r! Where, n = Total number of items r = Number of items taken at a time Suggest Corrections 0 Similar questions

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10C7 = 9C6 + 8C6 + 7C6 + 6C6. And our question is: Use that fact to derive a summation formula involving expressions nC1. I'm not entirely sure what this means, but I'm

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