If a fair die is rolled three times, what is the probability that a 3 occurs on at least one roll?
Choose one:  A) 25/36  B) 125/216  C) 91/216  D) 11/36  E) 36/216
Thus, the probability of at least 1 roll = 1- Probability of NO 3s = 1- (5/6)(5/6)(5/6) = 1-125/216 = 91/216.   5/6 is the probability of NOT getting a 3 in any 1 roll with 5 allowed numbers (=1,2,4,5,6) out of a total of 6 possibilities.   answer:91/216
<result>C</result>
If a fair die is rolled three times, what is the probability that a 3 occurs on at least one roll?