Question

Suppose two number cubes are rolled what is the probability that a sum of 12 or 11 turns up?

Answer 1

See the solution process below:

Explanation:

Assuming the two number cubes are 6 sided and each side has a number from 1 to 6, then, the possible combinations are:

As shown, there are 36 possible outcomes from rolling the two cubes.

Of the 36 possible outcomes, 3 of them sum to 11 or 12.

Therefore the probability of rolling this combination is:

`3` in `36`

Or

`3/36 => (3 xx 1)/(3 xx 12) => (cancel(3) xx 1)/(cancel(3) xx 12) => 1/12`

Or

`1/12 = 0.08bar3 = 8.bar3%`