Triangle Counting in Geometric Sequence: Analysis of Third Element

Question

,

How many triangles are in the third element?

Video Solution

Solution Steps

00:00 What is the number of triangles in the next term of the sequence?
00:03 Let's observe the pattern of the sequence
00:09 We can see that each time one triangle is removed
00:12 We'll use the sequence pattern to find the number of triangles
00:17 And this is the solution to the question

Answer

2