Question: What is the probability of rolling a sum of at least 9 with two dice?

The probability of getting 9 as the sum when 2 dice are thrown is 1/9.

What is the probability of rolling at least a 9 with two dice?

Two (6-sided) dice roll probability table

Roll a… Probability
6 15/36 (41.667%)
7 21/36 (58.333%)
8 26/36 (72.222%)
9 30/36 (83.333%)

What is the probability of rolling 2 dice and getting a sum of 9?

If you roll two fair six-sided dice, the probability that the sum is 9 or higher is 5/18.

What is the probability of rolling two dice to obtain the sum 9 or the number 4 on at least one die?

1 Expert Answer

Alternatively, if die B is the one that lands on 4, then die A has to land on 5. So, there are only 2 combos that sum to 9 and have at least 1 of the die be a 4. So the probability is: (number of combos we want)/(total number of combos) = 2/36.

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How many outcomes have a sum of at least 9?

(ii) two numbers appearing on them whose sum is 9. Therefore, total number of possible outcomes = 36.

What is the probability of getting a sum of at least 9?

❖ “At least one” is equivalent to “one or more.” To find the probability of at least one of something, calculate the probability of none and then subtract that result from 1. That is, P(at least one) = 1 – P(none).

What is the probability that the sum is 9?

So, P(sum of 9) = 1/9.

What is the probability of sum of two dice?

If the two dice are fair and independent , each possibility (a,b) is equally likely. Because there are 36 possibilities in all, and the sum of their probabilities must equal 1, each singleton event {(a,b)} is assigned probability equal to 1/36.

How do you find the probability?

How to calculate probability

  1. Determine a single event with a single outcome.
  2. Identify the total number of outcomes that can occur.
  3. Divide the number of events by the number of possible outcomes.

What is the probability of rolling a sum greater than 9?

Please select a two dice roll result below

Dice Sum Dice 1 Probability Total Probability
8 1 6 1 36
9 1 6 1 36
10 1 6 1 36
11 1 6 1 36

How do you find the probability of two dice?

If you want to know how likely it is to get a certain total score from rolling two or more dice, it’s best to fall back on the simple rule: Probability = Number of desired outcomes ÷ Number of possible outcomes.

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What is the probability of rolling 2 dice and getting a sum of 6?

Answer: The probability of rolling a sum of 6 with two dice is 5/36.

What is the probability the sum is 9 in three rolls of a die?

Probability of a sum of 9: 25/216 = 11.6%