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Find number abc

If ab6c3 + cbaaa = 69c68 find number abc. Multiple solutions may exist.

Correct answers: 5

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A boxer went to a doctor for t...

A boxer went to a doctor for treatment of insomnia.
"Have you tried counting sheep?" suggested the doctor.
"It doesn't work," replied the boxer. "Whenever I get to nine, I stand up!"

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Pneumatic tyre

In 1889, John Boyd Dunlop, a Scottish inventor, was issued a patent for his pnematic tyre. In 1887, when his 9-yr-old son complained of the rough ride he experienced on his tricycle over the cobbled streets of Belfast. Dunlop devised and fitted rubber air tubes held on to a wooden ring by tacking a linen covering fixed around the wheels. Due to the major improvement in riding comfort, Dunlop continued development, until he patented the idea. *[p.223] [Image: John Boyd Dunlop]

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