Question

International calls require the use of a country code. Many country codes are 3-digit numbers. Country codes do not begin with a 0 or 1 . There are no restrictions on the second and third digits. How many different 3-digit country codes are possible?

Answer 1

There are 800 different 3-digit country codes possible.

Step-by-step explanation:

In order to determine the number of different 3-digit country codes that are possible, we need to consider the restrictions that apply to the country codes. First, the country codes cannot begin with a 0 or 1. This means that there are 8 options for the first digit (2, 3, 4, 5, 6, 7, 8, and 9). For the second and third digits, there are no restrictions, so each digit can have 10 possible values (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9). Therefore, the total number of different 3-digit country codes is calculated by multiplying the number of options for each digit: 8 * 10 * 10 = 800.