In how many ways can 4 red, 3 yellow and 2 green discs be arranged in a row if the discs of the same colour are indistinguishable?

In how many ways can 4 red,3yellow and 2 green discs be arranged in a row if the discs of the same colour are indistinguishable?

In how many ways can 4 red, 3 yellow and 2 green discs be arranged if the discs of the same colour are indistinguishable ?

In how many ways can 4 green, 3 red and 2 yellow discs by arranged in row if the discs of the same colour are indistinguishable?

In how many ways can 4 boys and 3 girls be arranged in a row so that no two girls come together ?

In how many ways can 7 red and 6 black balls be arranged in a row, if no two black balls are together?

how many ways can 3 boys and 4 girls be arranged in a row so that all the three boys are together?

In how many ways can 4 girls and 5 boys be arranged in a row so that all the four girls are together?

Find the number of ways by which 4 green, 3 red and 2 white balls can be arranged in a row such that no two balls of the same colour are together. All balls of the same colour are identical.