Final answer:
The probability of rolling a 9 on two dice is 1/9.
Step-by-step explanation:
The probability of rolling a 9 on two dice is calculated by determining how many ways the dice can add up to 9. To find this, you can make a table of all possible outcomes and count the number of ways to get a sum of 9. There are 4 ways to roll a sum of 9 (3+6, 4+5, 5+4, 6+3) out of a total of 36 possible outcomes. So, the probability of rolling a 9 is 4/36, which simplifies to 1/9.