It is 5/36.
The probability of getting a sum of 2 at least once is 0.8155
For a single roll of a pair of fair dice, the answer is 1/36.
11/12
Assuming these are regular dice, the probability is 1.
The probability of rolling 12 with 2 dice is 1 in 36. The probability of not rolling 12 with 2 dice is 35 in 36.
The probability of getting a sum of 2 at least once is 0.8155
5/12
If the dice are fair then it is 5/36.
There is one way to roll a sum of 12. There are 36 different outcomes from rolling a pair of dice. Therefore, the probability is 1/36 ~= 0.0278 = 2.78%
try it and see!
For a single roll of a pair of fair dice, the answer is 1/36.
It is 1/9.
11/12
The probability is zero. The largest possible sum on two dice is 12.
Two standard dice cannot have a sum greater than 12. The probability, then, of getting a sum greater than 15 is zero.
It is 6/36 = 1/6.
It is 11/18.