You are given 6 balls of different colours (black, white, red, green, violet, yellow), in how amny ways can you arrange them in a row so that black and white balls may never come together?

In how many ways can 6 balls of different colours, namely black, white, blue, red, green and yellow be arranged in a row in such a way that the black and white balls ar never together?

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-

There are 3 blue balls, 4 red balls and 5 green balls. In how many ways can they be arranged in a row?

There are 10 red balls of different shades &g green balls of identical shades.Then the number of arranging them in a row so that no two green balls are together is

In how many ways can 3 red and 4 black balls be arranged in a row?

In how many ways 4 different white balls and 6 different black balls be arranged in a row that no two white balls are together ?

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_____