Find number abc
[7742] Find number abc - If 6bcaa - aaaba = 5a690 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 1
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Find number abc

If 6bcaa - aaaba = 5a690 find number abc. Multiple solutions may exist.
Correct answers: 1
#brainteasers #math
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A man phones home from his off...

A man phones home from his office and says to his wife, "I have the chance to go fishing for a week. It's the opportunity of a lifetime. I have to leave right away. Pack my clothes, my fishing equipment, and my blue silk pajamas. I'll be home in an hour to pick them up."
The man rushes home to grab everything. He hugs his wife, apologizes for the short notice, and then hurries off.
A week later, the man returns and his wife asks, "Did you have a good trip, dear?"
The man replies, "Yep, the fishing was great...but you forgot to pack my blue silk pajamas."
His wife smiles and says, "Oh, no I didn't...I put them in your tackle box.
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Screw-blank feeder mechanism

In 1856, Cullen Whipple, of Providence, RI, patented a screw-blank feeder mechanism (U.S. No. 15,052). In Oct 1840, he was one of ten incorporators of The New England Screw Co. He invented a machine for the company to use cutting the threads of screws (patented 18 Aug 1842) which he later improved by adding more cutters to also point the screws in the same machine (patent No. 9,477, 14 Dec 1852). He patented various other devices for improving the manufacture of screws. He has been credited* as the inventor of the first practical machine for pointing screws. Early screws had no point and required that a starter hole be drilled before use.«[Note: Famous First Facts by Joseph Nathan Kane incorrectly cites this screw-blank feeder mechanism's 3 Jun 1856 date and patent number as the first practical screw-pointing machine patent. In fact, Whipple invented his screw pointing machine four years earlier - in 1852.]
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