Question

I have no idea what this meansEvaluate the factorial expression.23!11(26−5)!

Answer 1

Here, we want to evaluate the factorial expression.

`(23!)/(11(26-5)!)`

by definition,

`\begin{gathered} n!\text{ = }n(n-1)(n-2)(n-3)\ldots3.2.1 \\ n!\text{ = }n(n-1)! \\ n!\text{ = }n(n-1)(n-2)! \end{gathered}`
`\Rightarrow(23!)/(11(26-5)!)=(23!)/(11(21)!)=(23*22*21!)/(11*21!)=(23*22)/(11)=46`

Answer: 46