Use the formula for the probability of the complement of an event.
Two dice are tossed. What is the probability of getting a sum of at least 5? (Enter your probability as a fraction.)
To find the probability of the complement (not getting a sum of at least 5), we need to first calculate the probability of getting a sum of less than 5.
There are a total of 36 possible outcomes when two dice are tossed.
To get a sum of less than 5, the possible outcomes are (1,1), (1,2), (1,3), (2,1), (2,2), (3,1).
So, there are 6 favorable outcomes.
Therefore, the probability of getting a sum of less than 5 is 6/36 = 1/6.
The probability of the complement (getting a sum of at least 5) is 1 - 1/6 = 5/6.
Therefore, the probability of getting a sum of at least 5 when two dice are tossed is 5/6.