Which is a winning combination of digits?
[7341] Which is a winning combination of digits? - 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: 13
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Which is a winning combination of digits?

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: 13
#brainteasers #mastermind
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Fear of alligators

While sports fishing off the Florida coast, a tourist capsized his boat. He could swim, but his fear of alligators kept him clinging to the overturned craft. Spotting and old beachcomber standing on the shore, the tourist shouted,"Are there any gators around here?!"

"Naw," the man hollered back, "they ain't been around for years!"

"Feeling safe, the tourist started swimming leisurely toward the shore.

About halfway there he asked the guy,"How'd you get rid of the gators?"

"We didn't do nothin'," the beachcomber said.

"The sharks got 'em."

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First electron tube

In 1904, the first electron tube, a diode thermionic valve, was invented by John Ambrose Fleming. The valve consists of a carbon or tungsten filament lamp, to which is added a metal plate (insulated from the filament), and a connecting wire brought through the glass wall of the bulb to a third terminal outside. When battery current is applied to the filament making it incandescent, the space between the filament and the insulated plate will be found to conduct elecrons in only one direction. That means if the valve is connected in a circuit in with an oscillating current, its one-way conductivity will convert the oscillating current into a unidirectional current capable of actuating a telephone receiver. He notified Marconi in a 30 Nov 1904 letter.
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