A single die is rolled twice. The 36 equally-likely outcomes are shown to the right.
Find the probability of getting two numbers whose sum is 7.
To find the probability of getting two numbers whose sum is 7, we need to count the number of favorable outcomes and divide by the total number of possible outcomes.
There are 6 favorable outcomes for getting two numbers whose sum is 7: (1, 6), (6, 1), (2, 5), (5, 2), (3, 4), and (4, 3).
The total number of possible outcomes when rolling a die twice is 36.
Therefore, the probability of getting two numbers whose sum is 7 is 6/36, which can be simplified to 1/6.