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Q2: a) In how many ways can 4 boys and 5 girls sit in a row if the boys and girls must alternate? b) In

Q2: a) In how many ways can 4 boys and 5 girls sit in a row if the boys and girls must alternate? b) In how many ways can 7 graduate students be assigned to 1 triple and 2 double hotel rooms during a conference?

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