Answered

Two fair 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice is greater than 10?

A. [tex]$\frac{5}{18}$[/tex]
B. [tex]$\frac{1}{12}$[/tex]
C. [tex]$\frac{1}{18}$[/tex]



Answer :

To determine the probability that the sum of the numbers on two fair 6-sided dice is greater than 10, we need to follow these steps:

1. Determine the total number of possible outcomes:
- Each die has 6 faces.
- When two dice are rolled, the total number of possible outcomes is [tex]\( 6 \times 6 = 36 \)[/tex].

2. Count the number of favorable outcomes:
- We need to find the combinations of dice rolls where the sum is greater than 10. Let's identify these combinations:
- If the sum of the dice is 11: possible combinations are (5, 6) and (6, 5).
- If the sum of the dice is 12: the possible combination is (6, 6).
- Therefore, there are 3 favorable outcomes in total:
[tex]\[ (5, 6), (6, 5), (6, 6) \][/tex]

3. Calculate the probability:
- The probability [tex]\( P \)[/tex] of an event is given by the ratio of the number of favorable outcomes to the total number of possible outcomes:
[tex]\[ P(\text{sum of two numbers on the dice is greater than 10}) = \frac{\text{number of favorable outcomes}}{\text{total number of possible outcomes}} = \frac{3}{36} \][/tex]
- Simplifying this fraction:
[tex]\[ \frac{3}{36} = \frac{1}{12} \][/tex]

Therefore, the probability that the sum of the two numbers on the dice is greater than 10 is [tex]\( \frac{1}{12} \)[/tex].