SOLUTION: in our class for algebra 2 we are working on probablity and also permutations and combinations.
a test contains 20 questions. the teacher asks you to answer 15 questions. How ma
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a test contains 20 questions. the teacher asks you to answer 15 questions. How ma
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Question 33665: in our class for algebra 2 we are working on probablity and also permutations and combinations.
a test contains 20 questions. the teacher asks you to answer 15 questions. How many different ways can you answer 15 questions. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! How many groups (combinations) of size 15 are there
in a set of 20 distinct objects?
Answer: 20 C 15 =[20!]/[(20-15)!15!]= 15504
Cheers,
Stan H.
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