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    richjl's Avatar
    richjl Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 23, 2012, 08:59 AM
    Test Results
    If a test has 100 questions, each worth 1 point apiece, with 5 multiple choice answers per question, what is the probability that if someone without studying randomly guesses at the answers what would be their grade on the test be?
    odinn7's Avatar
    odinn7 Posts: 7,691, Reputation: 1547
    Entomology Expert
    		  
    #2

    Feb 23, 2012, 09:09 AM
    You should really just study for it and learn the information.
    Question_All's Avatar
    Question_All Posts: 26, Reputation: 2
    New Member
    		  
    #3

    Feb 25, 2012, 10:35 AM
    1/(5^100)=1/(7.88860905*10^69)=1.2676506*10^-70

    That is the chance of you getting a perfect score guessing randomly
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #4

    Feb 25, 2012, 10:51 AM
    I think rich is asking a different question, not about a perfect score. Rich, if there were but one question with 5 choices what would the average score be? 1 out of 5, right?
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