Question

Indicate the formula for the following conditions. C(n,r)

Answer 1

The formula for C(n,r), also known as "n choose r" or a combination,
is: 
nCr = n! / (r!(n-r)!),
where n is the total number of options and r is number you must choose

The number generated is the total number of possible combinations. 

The ! means factorial. For example, 4! = 4 x 3 x 2 x 1

Answer 2

Answer: $C(n,r)=\frac{n!}{r!(n-r)!}$

Step-by-step explanation:

Definition: A combination is a collection or set of the elements such that the order of the arrangement of elements doesn't matter. It is a common technique to find the total number of combinations of elements present in an event . It is denoted by C(n,r) .

The formula for the number of combinations of n things taken r at a time is given by :-

$C(n,r)=\frac{n!}{r!(n-r)!}$