If a student picks 5 questions from a 7 question exam, there are 21 ways to pick them (7C5). However, if they are required to answer the 1st and 7th question, then how many ways are there to pick?

Please clarify if you have to answer 3 more questions in addition to 1 and 7.......................................................................

I assume that you have to answer the additional questions.

So the no: of ways will be 5C3 = 10 ways

Please let me know if you have any questions and best me if you are satisfactory.

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up