Question: two dice are tossed. what is the probability of not getting a sum of 6?
Answer: To get 6 with two dice, 1,2,3,4,5 are possible on on die, so 5,4,3,2,1 are needed on the other to make 6. Each die has 1 chance of being 1–6, out of 6, but 6 is excluded as there is no pairing that sums to 6 if either die is 6.