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12-04-2015
Mathematics

Answered

An amusement park has 20 different rides. You want to ride at least 15 of them. How many different combinations of rides can you go on?

Verified Answer :

12-04-2015

There are 15,504 different groups of 15 rides that you can select out of 20 available ones. That's (20 !) / (5! * 15!) .

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