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Value of 20c7

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Value of 20c7
  • 1 answers

Mahi Kumari 3 years, 10 months ago

As the problem of Combination(Selection) the general formula for finding it will be:- nCr = n!/r! (n-r)! Similarly, 20c7= 20!/7! (20-7)! 20!/7!×13! Ans..
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