QUESTION IMAGE
Question
ticket selection how many different ways can 4 tickets be selected from 36 tickets if each ticket wins a different prize? there are ways for the tickets to be selected.
Step1: Identify the permutation formula
The formula for permutations is $P(n,r)=\frac{n!}{(n - r)!}$, where $n$ is the total number of items and $r$ is the number of items to be selected. Here $n = 36$ and $r=4$.
Step2: Calculate the factorial values
$n!=36!$ and $(n - r)!=(36 - 4)!=32!$. Then $P(36,4)=\frac{36!}{32!}=\frac{36\times35\times34\times33\times32!}{32!}$.
Step3: Simplify the expression
Cancel out the $32!$ terms. We get $36\times35\times34\times33=1413720$.
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$1413720$