Question

A passenger train consists of 2 different locomotives, 6 different passenger cars and 2 different sleeper cars. In how many ways can the cars be arranged if the locomotives must be together and must be at the beginning of the train?

Answer 1

on no!

Answer 2

i was wrong. locomotives must be together at the beginning of the train, so just ignore them. you have 8 cars altogether so answer is 8!