Posted by **Jim** on Thursday, September 30, 2010 at 8:44pm.

what is the probability of rolling a matching pair of numbers when rolling a pair of dice?

- Algebra -
**kathryn**, Thursday, September 30, 2010 at 8:59pm
I think it would be 1/12.

Each dice has 6 numbers, thus there is a 1/6 probability of rolling any number. When you roll the second dice you have the same probability of getting any number. Since you want the numbers to be the same you would multiple the probabilities of getting one number together. 1/6 x 1/6 = 1/12

- Algebra (correction) -
**PsyDAG**, Friday, October 1, 2010 at 2:47pm
First of all 1/6 * 1/6 = 1/36 ≠ 1/12

However, the matched pair can be 1s, 2s, 3s, 4s, 5s or 6s. The either-or probability is found by adding the individual probabilities.

1/36 + 1/36 + 1/36 + 1/36 + 1/36 + 1/36 = 6/36 = 1/6

## Answer this Question

## Related Questions

- ALGEBRA - What is the probability of obtaining a sum of at least 4 when rolling ...
- Algebra - Suppose you roll a red number cube and a yellow number cube. What is ...
- statistic - Roll two 6-sided dice and examine their sum. a) How long will it ...
- math - A pair of dice is rolled and the sum of the dice is found. What is the ...
- probability - Two six-sided dice each have the numbers 1 through 6 on their ...
- MATH - What is the probability of obtaining a sum of at least 7 when rolling a ...
- math - A pair of dice is rolled. Is the event of rolling a sum of 2, 4, 6, or 8 ...
- Math - Statistics - I roll 12 4-sided dice. What is the probability that I roll ...
- algebra - need a pair of dice where each number from 1 - 12 has an equal chance ...
- Algebra102 - A pair of dice is rolled~ A possible event is rolling a multiple of...

More Related Questions