Grades 9-10 Video Solutions 2021-video 2021 9-10/30

Video Transcription

Video Summary

The problem involves arranging 2021 balls in a row, each colored in one of four colors: green, red, yellow, or blue. Every five consecutive balls must contain exactly one red, one yellow, and one blue ball. Additionally, any red ball is followed by a yellow one, and balls numbered 2, 20, and 202 are green. The challenge is to identify the color of the ball numbered 2021. By identifying a repeating color pattern every five balls and applying the given conditions, the color sequence determines the 2021st ball to be blue.

Keywords

color pattern

2021 balls

repeating sequence

red yellow blue

ball color challenge