1.

The numbers 1,2,3,..n are arranged in a random order. The probability that the digits 1,2,3,….k(k lt n) appear as neighbours is

Answer»

`((N - K) !)/(n !)`
`(n - k + 1)/( ""^(n) C_(k))`
`(n - k)/(""^(n)C_(k))`
`(k!)/(n!)`

Answer :B


Discussion

No Comment Found

Related InterviewSolutions