If two dice are rolled, what is the probability of getting a sum of 7?
Practice Questions
Q1
If two dice are rolled, what is the probability of getting a sum of 7?
1/6
1/12
1/36
1/18
Questions & Step-by-Step Solutions
If two dice are rolled, what is the probability of getting a sum of 7?
Step 1: Understand that when two dice are rolled, each die has 6 faces, numbered from 1 to 6.
Step 2: Calculate the total number of possible outcomes when rolling two dice. This is 6 (for the first die) multiplied by 6 (for the second die), which equals 36.
Step 3: Identify the combinations of the two dice that add up to 7. These combinations are: (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1).
Step 4: Count the number of combinations that give a sum of 7. There are 6 combinations.
Step 5: Calculate the probability of getting a sum of 7 by dividing the number of successful outcomes (6) by the total number of outcomes (36). This gives us 6/36.
Step 6: Simplify the fraction 6/36 to get 1/6, which is the final probability.
