Question

A number cube has sides that are labeled 1 to 6. Jamal rolls the number cube. What is the probability that he will roll a 22?

Answer 1

-- The probability of rolling a 22 is zero.  That result is impossible, because the sides are labeled with single digits 1 through 6 .  Since 22 is not printed anywhere on the cube, it can never come up.

-- The probability of rolling a 2 , however, is 1/6 . (B)

The -probability of rolling something you want is always

(the number of different possible results that you like)

divided by

(the total number of different possible results)