What a winning combination?
[7184] 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: 3
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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: 3
#brainteasers #mastermind
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Unusual affair

Paddy and his two friends are talking at a bar.

His first friend says, “I think my wife is having an affair with the electrician. The other day I came home and found wire cutters under our bed and they weren’t mine.”

His second friend says, “I think my wife is having an affair with the plumber the other day I found a wrench under the bed and it wasn’t mine.”

Paddy says, “I think my wife is having an affair with a horse.”

Both his friends look at him with utter disbelief.

“No, I’m serious,” Paddy says. “The other day I came home and found a jockey under our bed.”

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Three element vacuum tube

In 1907, the three-element vacuum tube was issued a U.S. patent to its inventor, Dr Lee de Forest as a “device for amplifying feeble electric currents - such, for example, as telephone currents” (No. 841,387). The tube was evacuated, with some remaining conducting gas molecules, and it was suggested using for the heated electrode such material as platinum, tantalum or carbon. He had made a public annoucement of his device a few months earlier, on 20 Oct 1906 at a meeting of the American Institute of Electrical Engineers held in New York City. On 18 Feb 1908, he received another patent for the grid electrode tube (No. 879,532).
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