Question

in how many ways can 7 Indians, 5 Pakistanis, and 6 dutch be seated in a row so that all persons of the same nationality seat together?

Answer 1

1. Indian, Pakistani, Dutch
2. Indian, Dutch, Pakistani
3. Pakistani, Indian, Dutch
4. Pakistani, Dutch, Indian
5. Dutch, Pakistani, Indian
6. Dutch, Indian, Pakistani

I count 6 ways assuming you're not mingling the nationalities at all?

It can also be found with 3! (factorial) which equals 3*2*1
3 because there are three things being rearranged in different orders