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Find number abc

If 6cba7 - a8779 = bb6c8 find number abc. Multiple solutions may exist.

Correct answers: 1

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That podiatrist is v...

“That podiatrist is very sneaky. Give him an arch, he will take a foot.”

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Dental chair patent

In 1848, the first U.S. patent for a surgical or dental operating-chair with adjustable elevation and tilt of the seat and back was issued to M.W. Hanchett of Syracuse, N.Y. (No. 5711). The chair included a footrest with adjustable elevation.[Image: top - full view of seat and foot rest; bottom - detail of tilt cogs beneath seat.]

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