What is the sum of rolling two dice?
This total number of possibilities can be obtained from the multiplication principle: there are 6 possibilities for a, and for each outcome for a, there are 6 possibilities for b. So, the total number of joint outcomes (a,b) is 6 times 6 which is 36.
What is the probability that the sum of the faces when rolling a pair of dice is seven?
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.
When two dice are thrown the total outcomes are?
We know that the total number of possible outcomes when two dice are thrown is =6×6=36.
What is the probability of rolling a pair of 6s?
Now, when you throw a pair of dice, from the definition of independent events, there is a (16)2=136 ( 1 6 ) 2 = 1 36 probability of a pair of 6’s appearing.
What is the probability of getting a sum of 13 when rolling a pair of dice?
Probability of a sum of 13: 21/216 = 9.7%