Interpretation of ^nC_r.In mathematics, the formula of combination is represented as: ^nC_r=n!/r!(n r)!Where,n = Total number of itemsr = Number of items taken ...

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Standard XII

Mathematics

Combination

What is nCr f...

Question

What is ${}^{n}C_{r}$ formula?

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Solution

Interpretation of ${}^{n}C_{r}$ .
In mathematics, the formula of combination is represented as:
${}^{n}C_{r} = \frac{n!}{r! (n - r)!}$
Where,
$n =$ Total number of items
$r =$ Number of items taken at a time

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What is Crn formula?

Interpretation of Crn.In mathematics, the formula of combination is represented as: Crn=n!r!n-r!Where,n= Total number of itemsr= Number of items taken at a time

What is ${}^{n}C_{r}$ formula?

Interpretation of ${}^{n}C_{r}$ .
In mathematics, the formula of combination is represented as:
${}^{n}C_{r} = \frac{n!}{r! (n - r)!}$
Where,
$n =$ Total number of items
$r =$ Number of items taken at a time