The Grinch sneaks into a room with 6 Christmas presents to 6 different people. He proceeds to

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Question:

The Grinch sneaks into a room with 6 Christmas presents to 6 different people. He proceeds to switch the name-labels on the presents. How many ways could he do this if (a) No present is allowed to end up with ts original label? Explain what each term in your answer (b) Exactly 2 presents keep their original labels? Explain c) Exactly 5 presents keep their original labels? Explain represents