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?

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) (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) (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

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it

RELATED QUESTIONS
A TEST CONSISTS OF 20 PROBLEMS AND STUDENTS ARE TOLD TO ANSWER ANY 10 OF THESE QUESTIONS. (answered by Tatiana_Stebko)
A test consists of 30 problems and students are told to answer any 10 of these questions. (answered by edjones)
A test has 20 questions and students are asked to answer only 7 of them. In how many ways (answered by vleith,edjones)
An exam paper in mathematics contains 12 questions and students must answer 10 of them.... (answered by richard1234)
There are 5 true and false questions on a test. How many different ways are there to... (answered by stanbon)
1) The freshman class has 300 students. Each freshman must write three reports from a... (answered by ewatrrr)
An examination is designed where the students are required to answer 20 questions from a... (answered by stanbon)
in our class for algebra 2 we are working on probablity and also permutations and... (answered by stanbon)