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Math Help - choice test prob

  1. #1
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    choice test prob




    1. IF A MULTIPLE CHOICE TEST CONSIST OF 5 QUESTION EACH,WILL FOUR POSSIBLE ANSWER ON WHICH ONLY ONE IS CORECT.

    A. HOW MANY DIFF WAYS CAN A STUDENT CHECK OF ONE ANSWER TO ITS QUESTION.
    B. HOW MANY WAYS CAN A STUDENT CHECK OF ONE ANSWER TO ITS QUESTION AND SET ALL THE QUESTIONS WRONG.
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  2. #2
    Member arpitagarwal82's Avatar
    Joined
    Feb 2009
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    a) Number of ways to answer
    4 x 4 x 4 x 4 x 4 = 4^5

    b) Number of ways to get all answes wrong
    3 x 3 x 3 x 3 x 3 = 3^5
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