An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. What is the probability that the sum of the dots is 11?

Answer 1

There since there are six possible sets of dots on each die, there are 6 * 6 = 36 possible sums of the two die.

These are the values of the two die that add up to 11:

5 and 6, 6 and 5.

So 2 out of the 36 possible sums are 11, so the probability of the sum of dots being 11 is 2/36 = 1/18.