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Find number abc

If 1587b + 7a7ab = bc628 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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Transactions of the Royal Society

In 1665, the first issue of Philosophical Transactions of the Royal Society was published. It became the world's oldest continuing periodical.

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