2009
Mathematics
67ca00ce0c643c71d77dee1f
The probability of a student passing any examination is 2/3. If the students takes three examination, what is the probability that he will not pass any of them?
A.
2/3
B.
4/9
C.
8/27
D.
1/27
Correct Answer: 1/27
Explanation
P(pass) = 2/3 P(not pass) = 1 - 2/3 = 1/3 P(not passing any of the 3 Exams) = 1/3 x 1/3 x 1/3 = 1/27
P(pass) = 2/3 P(not pass) = 1 - 2/3 = 1/3 P(not passing any of the 3 Exams) = 1/3 x 1/3 x 1/3 = 1/27THIS WEEK's
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