What a winning combination?
[6185] 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: 25 - 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: 25
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
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A Good Day for Ice Fishing

After church, little Johnny and his brother go ice fishing. Little Johnny starts drilling on the ice when a voice from above says, "Young man, there's no fish down there.”Little Johnny asks his brother, "Who is that?"His brother replies, "I don't know."So little Johnny starts to drill again and the voice says again, "For the second time, there's no fish down there."Little Johnny asks his brother, "Could that be God?"His brother replies again, "I don't know." Little Johnny starts drilling again and the voice says once more, "Young man, for the last time, I'm telling you there's no fish down there."Johnny looks up and asks, "Is that you, God?"The voice says, "No, I'm the manager and the rink's closed."-
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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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