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2. In how many ways can five people line up at a bank teller's window?

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The first person can move 5 positions since he is first. The second person can move 4 positions since one is already occupied, and so on...
User Jayamurugan
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5 x 4 x 3 x 2 x 1 = 120

The first person can move 5 positions since he is first. The second person can move 4 positions since one is already occupied, and so on...
User Israel Zalmanov
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