Grades 7-8 Video Solutions 2025-2025_7-8

Video Transcription

Video Summary

Mark aims to fill a grid with crosses (X) and circles (O), ensuring no four consecutive identical symbols appear in any row, column, or diagonal. By analyzing each line and filling gaps to prevent four-in-a-row patterns, Mark places circles where three Xs appear consecutively and vice versa. Following this strategic filling process, the ultimately completed grey column contains a total of two circles (O) and four crosses (X). The solution demonstrates systematic gap filling to maintain the rule against four matching symbols in sequence.

Keywords

grid filling

consecutive symbols

strategic placement

pattern prevention

crosses and circles