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What is the probability of obtaining a sum of at least 7 when rolling a pair of dice?
Wiki User
∙ 12y ago
There are 36 permutations of two dice. Of these, 21 have a sum of at least 7. The probability, then, of rolling at least a sum of 7 is 21 in 36, or about 0.5833.
The permutation list is below. The sums at least 7 are bold. Count them, and understand.
1+1 = 2
1+2 = 3
1+3 = 4
1+4 = 5
1+5 = 6
1+6 = 7
2+1 = 3
2+2 = 4
2+3 = 5
2+4 = 6
2+5 = 7
2+6 = 8
3+1 = 4
3+2 = 5
3+3 = 6
3+4 = 7
3+5 = 8
3+6 = 9
4+1 = 5
4+2 = 6
4+3 = 7
4+4 = 8
4+5 = 9
4+6 = 10
5+1 = 6
5+2 = 7
5+3 = 8
5+4 = 9
5+5 = 10
5+6 = 11
6+1 = 7
6+2 = 8
6+3 = 9
6+4 = 10
6+5 = 11
6+6 = 12
Wiki User
∙ 12y ago
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What is the probability of obtaining a sum of a least 4 when rolling a pair of dice?
11/12
Rolling three dice what is the probability of obtaining at least one six?
50%. There are three dice; each die has 6 faces.
If sixteen dice are rolled what is the probability of rolling at least one six?
It is 0.9459
When rolling two dice whats the probability of rolling at least one 6?
Rolling one die, it is 1/6. Rolling two dice, it is 2/6, which can be simplified to 1/3 or 33.33%.
When rolling a pair of dice what is the probability of rolling two?
The probability is 1/36.
What is the probability of obtaining a sum of a least 4 when rolling a pair of dice?
11/12
Rolling three dice what is the probability of obtaining at least one six?
50%. There are three dice; each die has 6 faces.
What is the probability of obtaining a sum of at least 6when rolling a pair of dice?
The best way to do this is to note that this is 1 minus the probability of obtaining a sum less than 6. The probability of obtaining a 2 is 1/36 (both dice get 1) The probability of obtaining a 3 is 1/18 (one dice gets 1, the other gets 2, or the other way around) The probability of obtaining a 4 is 1/12 (both dice get 2, or one dice gets 1 and the other 3, or the other way around) The probability of obtaining a 5 is 1/9 (one dice gets 2 and the other 3, or the other way around, or one dice gets 1 and the other 4, or the other way around) Adding these probabilities up gives 5/18. 1 minus this is 13/18 Thus the probability of obtaining a sum of at least 6 when rolling a pair of dice is 13/18.
What is the probability of rolling an even number with 3 dice?
With one roll of three dice, the probability is 7/8.
What is the probability of rolling a pair of dice and obtaining a total score of 9 or greater?
It is 5/18.
What is the probability of rolling a 1 with six dice?
The probability of rolling at least one '1' with six dice is 66.5% [1-(5/6)^6]*100%
What is the probability of rolling a pair of dice and obtaining a total score greater than 9?
It is 1/12.
What is the probability of getting 4 dots on top in rolling two dice?
The probability of rolling a 4 in a die is 1 in 6, or about 0.1667. The probability, then, of rolling a 4 in at least one of two dice rolls is twice that, or 2 in 6, or 0.3333. The probability of rolling a sum of 4 in two dice is 3 in 36, or 1 in 18, or about 0.05556.
If sixteen dice are rolled what is the probability of rolling at least one six?
It is 0.9459
What is the probability of rolling a pair of dice and obtaining a total score of 9 or more?
It is 10/36 = 5/18
A pair of dice are rolled find the probability at least one dice is a 4?
When rolling one die, the probability of getting a 4 is 1 in 6, or 0.1667. If two dice are rolled, you get two unrelated chances of rolling at least one 4, so the probability is 2 in 6, or 0.3333.
Probability of rolling doubles with two dice?
The probability of rolling doubles with two dice is 1 in 6, or about 0.167.
