Peter rolls two dice at the same time. What is the probability that either of the dices show either 1 or 5?  Choose the most appropriate option
A) a) 1/12  B) b) 1/18  C) c) 1/6  D) d) 5/12  E) e) 1/3
We can have 6 different outcomes on a dice.   Total outcomes on two dices = 6*6   We need only the cases when Peter rolls a double, that means only the outcomes in which the numbers on both the dices are same   They can be {1, 5}, {5, 1}.   A total of 2 outcomes   Probability = favorable outcomes/ total outcomes = 2/36 = 1/18.   Option b) 1/18
<result>B</result>
Peter rolls two dice at the same time. What is the probability that either of the dices show either 1 or 5?