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How many four digit numbers can be forme...

How many four digit numbers can be formed using digits 1, 2, 3, 4, 5 such that at least one of the number is respeated?

A

`4^(4)-5!`

B

`4^(5)-4!`

C

`5^(4)-4!`

D

`5^(4)-5!`

Text Solution

Verified by Experts

The correct Answer is:
D
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