SOLUTION: You just got a free ticket for a boat ride, and you can bring along 4 friends! Unfortunately, you have 6 friends who want to come along.
How many different groups of friends could
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How many different groups of friends could
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Question 1158898: You just got a free ticket for a boat ride, and you can bring along 4 friends! Unfortunately, you have 6 friends who want to come along.
How many different groups of friends could you take with you? Found 2 solutions by solver91311, ikleyn:Answer by solver91311(24713) (Show Source):
If you have 6 friends, there are 6 ways to choose the first person who comes with you. For each of those 6, there are 5 ways to choose the second person. Hence there are 6 X 5 = 30 ways to choose the first two. Then, for each of those 30 ways to choose the first two, there are 4 ways to choose the third person...and so on.
John
My calculator said it, I believe it, that settles it
The order of friends inside the selected group DOES NOT MATTER.
Therefore, the answer is the number of COMBINATIONS = = 3*5 = 15. ANSWER
Not the number of permutations, as the other tutor mistakenly thinks.
