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Npr=720 and ncr =120 .find r

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Npr=720 and ncr =120 .find r
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Chandrashekhar Wankhede 7 years, 10 months ago

ncr= npr / r! 120 = 720 / r! r! = 720 / 120 = 6 = 3*2*1 = 3! r = 3
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