SOLUTION: There were 5 Multiple choice question with 4 possible answers to each on a history test. If you guessed on all of them, what's the probability that you got at least one question wr

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Question 462317: There were 5 Multiple choice question with 4 possible answers to each on a history test. If you guessed on all of them, what's the probability that you got at least one question wrong?
A. 0.25
B. 1.25
C. 0.9990
D. .0009
E. 0.20


Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
1 - (1/4)^5 = 1023/1024 = 0.9990 one-probability that you got them all correct.
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Ed