If `a` denotes the number of permutations of `(x+2)` things taken all at a time, `b` the number of permutations of `x` things taken `11` at a time and `c` the number of permutations of `x-11` things taken all at a time such that `a=182b c ,` find the value of `xdot`

If a denotes the number of permutations of x+2 things taken all at a time , b be the number of permutations of x things taken 11 at a time and c the number of permutations of x -11 things taken all at a time such that a =182 bc , then the value of x is

If a denotes the number of permutations of x + 2 things taken all at a time, b denotes the number of permutations of x things taken 1 1 at a time and c denotes the number of permutations of x - 1 1 things taken all at a time such that a = 182 be, then the value of x is

The number of circular permutations of 8 things taken 4 at a time is

The number of circular permutations of 8 things taken 4 at a time is

The number of circular permutation of 8 things taken 4 at a time is

2.The number of permutations of 8 things taken at a time is 1680, Then r=

Find the number of permutations of 7 objects, taken 3 at a time.

The no.of all permutation of n distinct things taken all at a time is n!