Find number abc
[4855] Find number abc - If c8bc1 - cabb0 = 5051 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 43 - The first user who solved this task is Thinh Ddh
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Find number abc

If c8bc1 - cabb0 = 5051 find number abc. Multiple solutions may exist.
Correct answers: 43
The first user who solved this task is Thinh Ddh.
#brainteasers #math
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Martha Kelly: Preparing for Office Work

Its been a couple of years since I actually worked in an office, so I thought I should do something to prepare to get back into the typing, filing and phone answering, and what not. So what I did was I had a friend of mine go with me down to the local swimming pool, and I had him tie me up in a burlap sack and sink me to the bottom of the pool. And then just as I was about to suffocate, he yanked me up and gave me a lunch break.
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Spirit level

In 1666, Robert Hooke invented the spirit level, according to Sir David Brewster in the 1832 Edinburgh Encyclopedia. It was likely a variation on the spirit level, or “artificial horizon,” which he may have used while employed as City Surveyor of London after the Great Fire. The original concept was due to Melchisédech Thévenot, sometime before 2 Feb 1661, the date of his letter about it to Christiaan Huygens. In the 1670s, Hooke added a spirit level to his quadrant.«
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