32. On a twelve-sided die, the numbers are each marked on two faces, and the numbers 5,6,7,8 are each marked on one face. Observing, it is found that the probability of each of the 12 faces appearing is the same. The probability that the sum of the results of two rolls of this twelve-sided die is 6 is:
Pick one
Solution
32. (A).
Due to the probability of the first roll showing being ; the probability of the second roll showing being , the required probability is
Want a route through all this instead of an archive? The track
puts 2,000 problems in a working order, from AMC 10 level to the IMO shortlist.