Grades 9-10 Video Solutions 2021-video 2021 9-10/12

video 2021 9-10/12

Video Transcription

Video Summary

Ahmad wants to climb an 8-step staircase, using 1 or 2 steps at a time, but there is a broken 6th step. To reach the 8th step, he must first get to the 5th step. From the 5th step, he is forced to go directly to the 7th and then the 8th step, due to the broken 6th step and no further options. There are 8 possible ways to reach the 5th step. Therefore, Ahmad can reach the top step in 8 different ways. The answer is 8.

Keywords

staircase

broken step

climbing paths

8 ways

Ahmad