Question

Just help. Also this question is related to question 5 so if you can do this one please help me with question 5

Answer 1

55

Explanation:

5th step = 15 timbers

6th step = 21 timbers

7th step = 28 timbers

8th step = 36 timbers

9th step = 45 timbers

10th step = 55 timbers

Hope this helps!!

Let me know if I'm wrong...