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Q1. You are taking your friends for a joy ride to the ice cream shop. There are 5 seats in the car including the drivers sea
math   Statistics-And-Probability   
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Answer #1

There are 5 seats in cars including driver seat

And there are 7friends in total

Here we use combination because order does not matter.

So number of different groups of friends you could take is = 7C4

= \frac{7!}{(7-4)!4!}

= 35

So Number of group = 35

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