There are n white and n black balls marked 1, 2, 3,…..,n. The number of ways in which we can arrange these balls in a row so that neighbouring balls are of different colours, is

There are (n+1) white and (n+1) black balls,each set numbered 1to n+1. The number of ways in which the balls can be arranged in a row so that the adjacent balls are of different colors is a.(2n+2)! b.(2n+2)!xx2 c.(n+1)!xx2 d.2{(n+1)!}^(2)

There are n idstinct white and n distinct black ball.If the number of ways of arranging them in a row so that neighbouring balls are of different colors is 1152, then value of n is

There are (n+1) white similar balls and (n+1) black balls of different size.No of ways the balls can be arranged in a row so that adjacent balls are of different colours is

The number of ways in which n distinct balls can be put into three boxes, is

A box contains 3 red, 4 white and 2 black balls. The number of ways in which 3 balls can be drawn from the box, so that at least one ball is red , is ( all balls are different )

The number of ways of arranging m white and n black balls in a row (mgtn) so that no two black are placed together, is

There are four different white balsl and four different black balls. The number of ways that balls can be arranged in a row so that white and black balls are placed alternately is_____

You are given 8 balls of different colour (black,white ......). The number of ways in which these balls can be arranged in a row so that the two balls of particular colour (say red and white) may never come together is-