Brilliant.org sixth exercise (Splitting & combining)

Описание: My sixth educational YouTube video is out now!
Today I've done another exercise from a similar chapter on Brilliant.org, splitting and combining parts from respective diagrams, from Level 1 Mathematical Thinking.
Brilliant.org is free-to-access online course (plus Premium mode, which offers unlimited access) with lots of subjects from different areas, ranging from Maths to Computer Science, and many more.
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Video timestamps
0:00 Introduction
0:31 Mathematical Thinking
1:00 Basic problem 1
1:29 Basic problem 2
1:52 Basic problem 3
2:47 Basic problem 4
3:13 Basic problem 5
3:37 Basic problem 6
4:24 Quickly check your understanding!
4:41 Test problem 1
5:08 Test problem 2
5:42 Test problem 3
6:28 Level complete!
6:40 Extended streak + Premium users x20 longer streaks (Unwanted)
7:09 Conclusion