Which is a winning combination of digits?
[7634] 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: 3
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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: 3
#brainteasers #mastermind
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Morris walks out into the stre...

Morris walks out into the street and manages to get a taxi just going by. He gets into the taxi, and the cab driver says, "Perfect timing. You're just like Dave."
"Who?"
"Dave Aronson. There's a guy who did everything right. Like my coming along when you needed a cab. It would have happened like that to Dave."
"There are always a few clouds over everybody," says Morris.
"Not Dave. He was a terrific athlete. He could have gone on the pro tour in tennis. He could golf with the pros. He sang like an opera baritone and danced like a Broadway star."
"He was something, huh?"
"He had a memory like a trap. Could remember everybody's birthday. He knew all about wine, which fork to eat with. He could fix anything. Not like me. I change a fuse, and I black out the whole neighborhood."
"No wonder you remember him."
"Well, I never actually met Dave."
"Then how do you know so much about him?" asks Morris.
"Because I married his widow."
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Davy's safety lamp

In 1815, English chemist, Sir Humphry Davy of London patented the miner's safety lamp. Miners at work constantly met firedamp, an explosive mix of methane gas and air, during the working of coal. This was an almost insurmountable obstacle to the working of many of the collieries until the discovery of the safety lamp. The flame of the safety lamp is surrounded by a copper or iron gauze cylinder, with openings no more than 1/24-inch. Such a fine gauze prevents flame passing through, but fails if coarser. The wire absorbs or conducts away the heat of the flame contained inside the lamp so it does not explode gas outside the lamp. If firedamp is present, a pale blue flame appears around the central flame. This warns a miner to leave the area immediately!
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