Odds Probability

Question

Problem :

a) If the sum of the two dice is taken, what is the probability of rolling each possible sum ?

b) What is the odds against rolling each possible sum ?

Answer 1

This might help you:

There are 36 possible rolls.

There is only 1 roll that gives 2 as the sum so the probability of getting a 2 is 1/36

There are 2 rolls that give 3 as the sum so the probability of getting a 3 is 2/36 = 1/18

There are 3 rolls that give 4 as the sum so the probability of getting a 4 is 3/36 = 1/12

etc, etc

For your second question, remember that odds against are the number of failures divided by the number of successes. So the odds against getting a 2 are 35/1