SOLUTION: A test consists of 20 questions and students are to answer 16 of them. In how many different ways are the students able to choose the 16 questions?

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Question 717130: A test consists of 20 questions and students are to answer 16 of them. In how many different ways are the students able to choose the 16 questions?
Found 2 solutions by lynnlo, solver91311:
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
20c16=(20!)/(20-16)!*(16)!
=(20*19*18*17)/(4*3*2)
=4845

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Which is the number of ways to choose 16 things from 20 things. The number of ways to choose things from things is calculated with the formula:



Congratulations! You have been randomly selected to be able to do your OWN arithmetic.

John

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