0.999...
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Illustrations in base 10
- Explanation why "0.999..." equals "1" using number lines
Illustrations in other bases
- Base 3: nested intervals
- Base 3: 1/4, 2/3, and 1 in the Cantor set
- Base 4: The decimal 0.333… = 1
- Base 4: The 4-adic number …333 = −1
