Question

Find the odds for getting a sum of 5 when two fair dice are rolled.
A) 1 to 8
B) 1 to 9
C) 8 to 1
D) 9 to 1

Answer 1

There are 4 "5's" out of 36 possible rolls [(1, 4), (2, 3), (3, 2), and (4, 1)]. That gives a probability of 4/36 or 1/9, giving odds of 1 to 8.

Answer 2

The "odds" are the "successes" to "non-successes". One success to (for) every non-success.