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richjl
Feb 23, 2012, 07:59 AM
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
Feb 23, 2012, 08:09 AM
You should really just study for it and learn the information.
Question_All
Feb 25, 2012, 09:35 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
Feb 25, 2012, 09:51 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?