Multiplechoice questions each have 6 possible answers one of

Multiple-choice questions each have 6 possible answers, one of which is correct. Assume that you guess the answers to 4 such questions.

Use the multiplication rule to find the probability that the first three guesses are wrong and the fourth is correct. That is, find P(WWWC), where C denotes a correct answer and W denotes a wrong answer.
(round answer to 4 decimal places)
P(WWWC)=

What is the probability of getting exactly one correct answer when 4 guesses are made?
(round answer to 4 decimal places)
P(exactly one correct answer) =

Solution

Let, C denotes a correct answer and W denotes a wrong answer.

Thus, using multiplication rule find, P(WWWC)= 5/6*5/6*5/6*1/6

=0.09