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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 thB. the number 3423 is at 183th positionC. the number 3412 is at 178th positionD. the number at 110th position 2342 |
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Answer» Correct Answer - 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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