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Consider the digits in set S=(1,2,3,4). ...

Consider the digits in set `S=(1,2,3,4)`. All four-digit number formed using digits in `S` are arranged ascending order. Which of the following is/are correct?

A

The number 3412 is at 177 th

B

the number 3423 is at 183th position

C

the number 3412 is at 178th position

D

the number at 110th position 2342

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
`S=(1,2,3,4)`
`1---=64`
`2----=64`
`3,1---=16`
`3,2---=16` ltbr. `3,3----=16`
`3,4,1,1=1`
`3 4 1 2`
So, number 3412 is at `178^(th)` position. Similarly other options may be checked.
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