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Mathematical Mysteries

Execute multi-step mathematical algorithms (Kaprekar, Collatz) and appreciate the concept of mathematical constants and unsolved conjectures.

7 lessons

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The Magic of 6174

Hook introducing Kaprekar's Constant.

๐Ÿ’ก Did you know?
In 1949, Indian mathematician D.R. Kaprekar discovered a mathematical 'black hole'. No matter what 4-digit number you start with (as long as the digits aren't all the same), his simple subtraction routine will always suck you into the number 6174!
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โ† previousDigits & Palindromesnext โ†’Mental Math & Estimation