Question

[Permutations] Find the number of ways to paint 15 offices where 3 offices should be yellow, 5 should be blue, 4 should be red and all remaining should be white.

I already have my answer but I'm not sure if it's correct.

Answer 1

What is your nswer?

Answer 2

Here:
n = 15,
yellow = 3,
blue = 5,
red = 4,
white = 3

15!/3!5!4!3!
= 12612600

Answer 3

I think it IS right!! :D

Answer 4

Are you sure? hehe

Answer 5

Yes!! :D

Answer 6

Okay, thanks.