Kayx7958 Kayx7958

25-03-2020
Mathematics

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____the number of combinations of n items chosen r at a time is the quotient of n factorial and the product of r factorial and the factorial of the difference of n and r

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PollyP52 PollyP52

25-03-2020

Answer:

nCr.

Step-by-step explanation:

That would be nCr,

For example

5C2 = 5! / 2! (5-2)!

= 5! / 2!3!

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