Jasmine rolls a number cube 72 times. The number 2 is rolled 13 times and the number 3 is rolled nine times. To the nearest whole percent, what is the experimental probability of rolling a 2 or 3?

7%

18%

22%

31%

From the given above, the probability of rolling 2 is 13/72. The probability of rolling 3 is 9/72. We are asked for the probability of rolling 2 OR 3. Since the conjunction OR is used, we add their probabilities. The addition will yield an answer of 11/36. If this is converted to percentage, the answer is approximately 31%.