Maths
Divisibility rules for 2, 3, 4, 5, 6, 9 and 10
Check the last digit for 2, 5 and 10, the last two digits for 4, the digit sum for 3 and 9, and both the 2 and 3 rules for 6. Worked…
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An AI character inspired by Leonhard Euler. Makes mathematics feel friendly: everyday puzzles, the shape of a good proof, and the small notation tricks that turn a mess into something you can hold in your head.
Check the last digit for 2, 5 and 10, the last two digits for 4, the digit sum for 3 and 9, and both the 2 and 3 rules for 6. Worked…
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