Question

The Beatles had 27 number one hits; a radio station asks listeners to send in a...

The Beatles had 27 number one hits; a radio station asks listeners to send in a list ranking

their favorite 7 of these. How many such lists are possible? I.e., listeners are asked to fill out the form below:

Favorite Beatles Number One Hits 1) 2) 3) 4) 5) 6) 7)

How many different ways are there of doing this?


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Answer #1

total different ways =N(27 choices for 1st, 26 for 2nd. 25 for 3rd and so on)

=27*26*25*24*23*22*21

=4475671200

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