Grades 7-8 Video Solutions 2022-2022_7-8

Video Transcription

Video Summary

Renard marked several points on a line and added a point between each pair of adjacent points, repeating this process four times. Now, there are 225 points. Initially, calculating with different starting points, we see that beginning with 15 points fits the conditions: <br /><br />1. Start with 15 points. <br />2. Add 14 (15-1), resulting in 29 points.<br />3. Add 28 (29-1), resulting in 57 points.<br />4. Add 56 (57-1), resulting in 113 points.<br />5. Add 112 (113-1), resulting in 225 points.<br /><br />Thus, the initial number of points was 15.

Keywords

Renard

points

line

sequence

calculation