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

17000

17280

18000

None

Let 4 girls be one unit and now there are 6 units in all. They can be arranged in 6! ways. In each of these arrangements 4 girls can be arranged in 4! ways. => Total number of arrangements in which girls are always together = 6!*4!=720*24= 17280

Back To Top