Solve the problem.
-A student is told to work any 7 out of 10 questions on an exam. In how many different ways can he complete the exam? (The correctness of his answers has no bearing.)
A) 120
B) 10,000,000
C) 720
D) 21

Question

Quizplus · Accepted Answer

The number of ways to choose 7 questions out of 10 is given by the combination formula C(10,7) = 10! / (7! * (10-7)!) = 120.

Solve the Problem. -A Student Is Told to Work Any 7 Out of 7