Скачать или смотреть Viral Problem - How To Solve In 90 Seconds

I had many requests to solve problems like this. Watch the video to learn the trick!

Sources
https://www.quora.com/If-4b-2-+-1-b-2...
   • Difference of Cubes Formula Explained  
https://en.wikipedia.org/wiki/Factori...
http://www.mesacc.edu/~scotz47781/mat...
https://oeis.org/A003325

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"40 Paradoxes in Logic, Probability, and Game Theory" contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)
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"The Best Mental Math Tricks" teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)
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"Multiply Numbers By Drawing Lines" This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 4.3/5 stars on 6 reviews)
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