What a winning combination?
[6136] What a winning combination? - The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. - #brainteasers #mastermind - Correct Answers: 73 - The first user who solved this task is Nasrin 24 T
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What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 73
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
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Vacuum Cleaner Salesman

A little old lady answered a knock on the door one day, only to be confronted by a well-dressed young man carrying a vacuum cleaner. Good morning," said the young man. "If I could take a couple of minutes of your time, I would like to demonstrate the very latest in high-powered vacuum cleaners.
"Go away!" said the old lady. "I haven't got any money!" and she proceeded to close the door..
Quick as a flash, the young man wedged his foot in the door and pushed it wide open. "Don't be too hasty!" he said. "Not until you have at least seen my demonstration." And with that, he emptied a bucket of horse manure onto her hallway carpet. "If this vacuum cleaner does not remove all traces of this horse manure from your carpet, Madam, I will personally eat the remainder."
The old lady stepped back and said, "Well I hope you've got a damned good appetite, because they cut off my electricity this morning.."    

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Screw pointing and threading machine patent

In 1852, Cullen Whipple, of Providence, R.I., patented his "Mechanism for Pointing and Threading Screw-Blanks in the Same Machine" (U.S. No. 9477). His new design incorporated additional cutters in the same threading machine he had patented on 18 Aug 1842 (No. 2754, reissued 5 Mar 1850). Before machines provided a point on screws, they had blunt ends, and it was necessary to drill a starter hole. In Oct 1840, he was one of ten incorporators of The New England Screw Co. After his original thread-cutting machine, he invented another for shaving the heads of screws (patented 6 Apr 1843) and one for removing the burs left in cutting the slots in the heads (patented 19 Apr 1843). He patented seven other screw-manufacturing devices.«
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