Which is a winning combination of digits?
[6877] 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: 28 - The first user who solved this task is Nasrin 24 T
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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: 28
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
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The Doctor Needs A Wrench

A woman with a minor injury was at the hospital because her doctor said she wanted to take a closer look at it to make sure everything was all right. The woman's husband sits patiently in the waiting room.
After a few minutes, the doctor comes out and asks her assistant for a wrench, which understandably concerns the husband.
Then, after a couple more moments, the doctor re-enters the room, this time asking for a screwdriver. The husband grows worried and begins to pace in circles. Then, a little later, the doctor bursts through the doors screaming for a hammer and at that, the husband, in a state of frenzied fear, runs up and asks, 'Doctor, what the heck is wrong with my wife?'
'I don't know,' replies the flustered doctor, 'I can't get my bag open!'

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Safety lamp

In 1816, Sir Humphry Davy's safety lamp was first used in a coal mine. Deadly explosions had been a continual hazard caused by the flammable gas, methane, leaking out of the coal seams ignited by the flame of a miner's lamp. There had been previous attempts by others to make a safety lantern. Davy applied a scientific approach to determine the suitable fineness of wire gauze placed around the flame which would avoid ignition of flammable gas outside. He determined that the holes in the gauze should be less than 1/22 inch in diameter, and that the wire itself should be between 1/40 to 1/60 inch thick. Since the flame changed colour in the presence of methane, it also served as a warning to the miner to take protective action.«[Image: Davy safety lamp, circa 1816.]
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