Grades 11-12 Video Solutions 2024-2024_11-12

Video Transcription

Video Summary

The task is to determine how many three-digit numbers contain at least one of the digits 1, 2, or 3. There are 900 total three-digit numbers ranging from 100 to 999. To find those without any of the digits 1, 2, or 3, we examine the choices for each digit: 6 options for the first digit (4-9), and 7 options each for the second and third digits (0, 4-9), totaling 294 such numbers. Subtracting this from the total, 900 - 294, we find there are 606 three-digit numbers that include at least one of the digits 1, 2, or 3.

Keywords

three-digit numbers

digits 1 2 3

number calculation

digit exclusion

mathematical problem