A sixsided die is rolled 3 times How many possible outcomes

A (six-sided) die is rolled 3 times. How many possible outcomes involve a \"1\" being rolled at least twice?

Solution

total outcomes = 6 + 6 + 6 = 18

possible outcomes involve a \"1\" being rolled at all three times = 3/18 = 1/6

and possible outcomes involve a \"1\" being rolled at twice times = 2/18 = 1/9