Question #d0f63

1 Answer
David B.
Mar 15, 2016

Assuming there is only one correct answer to each question out of the four choices, the chance of randomly guessing the correct answer on any one question is one out of four or:

#P_c=1/4#

In words, we know that the probability of getting all three correct is the probability of getting the first correct (one out of four = 1/4) and the probability of getting the second correct (1/4) and the probability of getting the third correct (also 1/4). In math, the probabilities multiply

#P_(4c)=P_(1c)*P_(2c)*P_(3c)=P_c^3=1/4^3=1/64#

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