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How many numbers can be formed from 1, 2...

How many numbers can be formed from 1, 2, 3, 4, 5 (without repetition), when the digit at the unit's place must be greater than that in the ten's place?

A

54

B

60

C

`(5! )/(3)`

D

`2 xx 4!`

Text Solution

Verified by Experts

The correct Answer is:
B
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