Answer :

[tex] \frac{4!}{4!4!} [/tex]

[tex] \frac{4*3*2*1}{4*3*2*1*4*3*2*1} [/tex]

[tex] \frac{1}{4*3*2*1} [/tex]

[tex] \frac{1}{24} [/tex]
[tex]\frac{4!}{4!4!}=\frac{1}{4!}=\frac{1}{24}[/tex]

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