# Question

How many different ways can 5 people—A, B, C, D, and E—sit in a row at a movie theater if (a)A and B must sit together;

(b) C must sit to the right of, but not necessarily next to, B;

(c) D and E will not sit next to each other?

(b) C must sit to the right of, but not necessarily next to, B;

(c) D and E will not sit next to each other?

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