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In how many ways can 8 people be lined up to get on a bus if...

In how many ways can 8 people be lined up to get on a bus if 5 specific persons insist on following each other (that is the 5 persons are in a group)? (Enter an integer answer)

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Answer #1

number of ways =N(considering 5 people as a single unit whcih can interchange within in 5! ways , there are 4 units including other 3 persons and these 4 can be arranged in 4! ways )

=5!*4!

=120*24

=2880

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