97% of people can not do this problem! Can you? @tecmath

Uploaded May 2020 | Updated September 2026, 2 weeks ago

This problem looks easy - but be careful! Can you solve it?
Or will more people lead to more work?

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patreon.com/tecmath

For the playlist of math problems:
youtube.com/playlist?list=PLjbxBzUM6SLnhuj7JZAEAIzHDPBgydl16 To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: patreon.com/tecmath
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97% of people can not do this problem! Can you?

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Fast Math Trick - How to multiply numbers under twenty faster than a calculator

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97% of people can not do this problem! Can you?