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Posted by on Thursday, February 10, 2011 at 7:28pm.

You can answer any 8 questions from the 12 questions on an exam. In how many different ways can you choose the 8 questions, assuming that the order in which you choose the questions is irrelevant?

  • Math - , Thursday, February 10, 2011 at 7:38pm

    you must use combination formula.
    n!/r!(n-r)!
    Sub values
    12!/ 4! 8!

    ! is factorial.

  • Math - , Sunday, April 17, 2011 at 6:44am

    Yes

  • Math - , Monday, November 17, 2014 at 9:31pm

    a student answers 75% on a math exam correct. If he answer 60 questions correctly How many questions are on the exam.

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