Nine people (Ann, Ben, Cal, Dot, Ed, Fran, Gail, Hal, and Ida) are in a room. Five of them stand in a row for a picture. (a) How many ways are there to choose five people for the picture if Hal must be there and Ben must not be there? (b) In how many ways can a row of five people be formed if Dot is on the left end and Ed is on the right end? (c) In how many ways can a row of five people be formed if Ann and Ben are in the picture and standing next to each other?

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