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Find number abc

If 3b88b + bcaab = cbbb0 find number abc. Multiple solutions may exist.

Correct answers: 0

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What's the tallest...

What's the tallest building in the city?
- The library because it's so many stories high!

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Largest perfect number

In 1992, British scientists found new largest perfect number (2 756839 -1 * 2 756839).

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