write your answer as a simplified fraction.

Question

Each of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 is written on a ticket and the tickets are

placed in a bowl. If 3 of the tickets are selected at random, find the probability that

all three numbers are less than 5.

Answer 1

Probability first number less than 5 = 5/10

Probability second number less than 5 = 4/9

Probability third number less than 5 = 3/8

Probability all three numbers less than 5 + 5/10 * 4/9 * 3/8 = 60/720 = 1/12