If you roll two fair six-sided dice, what is the probability…

. Total Possible Outcomes

Each die has 6 sides. When rolling two dice, the total number of combinations is:

2. Favourable Outcomes (Sum of 9)

List the pairs

that add up to 9:

There are 4 successful outcomes.

3. The Calculation

The probability is the number of favourable outcomes divided by the total outcomes:

Simplified, this is 1/9, or approximately 11.1%.

Would you like to try calculating the probability for a different sum, like 7 or 11?

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