Grades 9-10 Video Solutions 2021-video 2021 9-10/18

Video Transcription

Video Summary

The problem involves a 3x3 square where each cell initially contains zero. In each step, the numbers in a 2x2 sub-square are increased by one. The task is to determine the number in a specific square after several operations. The solution involves defining variables for each sub-square's operation frequency. By setting up and solving a system of equations using known values from various squares, we determine that the value in the square marked with a question mark is 16. Thus, the answer to the question is 16.

Keywords

3x3 square

2x2 sub-square

system of equations

operation frequency

solution