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Colourable number chart
100 numbers in a 10×10 grid. Click cells to colour them and see patterns appear.
Colourable number chart
Click any cell to colour it. Or pick a pattern below.
Things to try
- Colour every multiple of 5. They make two clean columns.
- Colour the primes. The pattern thins out as numbers grow.
- Colour the evens, then the odds — every cell ends up coloured exactly once.