Question

A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of six

digits. The first digit cannot be 4 and the last digit must be even. How many different codes are available? (Note that 0
is considered an even number.)

Answer 1

450,000

Explanation:

The first digit has 9 choices

Digits 2 through 5 each have 10 choices

Digit 6 has 5 choices.

9 * 10 * 10 * 10 * 10 * 5 = 450,000