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## When two dice are rolled what is the probability that sum is either 7 or 11?

2 Answers. The probability is **25%** .

## What is the probability of rolling a 7?

Two (6-sided) dice roll probability table

Roll a… | Probability |
---|---|

5 | 4/36 (11.111%) |

6 | 5/36 (13.889%) |

7 | 6/36 (16.667%) |

8 | 5/36 (13.889%) |

## What is the probability that you obtain a sum of 7 or a sum of 11 on the first roll?

For example, since a 7 or an 11 is a winner on the first roll and their probabilities are 6/36 and 2/36, the probability of winning on the first roll is 6/36+2/36=**8/36**.

## What is the probability of getting neither total of 7 nor 11 when the pair of dice is tossed?

Therefore Probablity of sum neither 7 nor 11 is **7/9**.

## What is the probability of getting a sum of 7 when rolling two dice?

For each of the possible outcomes add the numbers on the two dice and count how many times this sum is 7. If you do so you will find that the sum is 7 for 6 of the possible outcomes. Thus the sum is a 7 in 6 of the 36 outcomes and hence the probability of rolling a 7 is **6/36 = 1/6**.

## What is the probability of not rolling a 7?

With the help of a calculator we find that we will not get a total of 7 on any of the first 10 rolls approximately **16.15%** of the time. This implies that we will get a total of 7 on at least one of the first 10 rolls 100%−16.15%=83.85% of the time.