Find the right combination
[7834] Find the right 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: 2
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Find the right 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: 2
#brainteasers #mastermind
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Two buddies are fishing, but

Two buddies are fishing, but they haven’t caught anything all day. Then, another fisherman walks by with a huge load of fish. They ask him "excuse me, but where did you get all those fish?"
The other fisherman replies,” If you just go down the stream until the water isn't salty, there are a ton of hungry fish."
They thank him and go on their way. 15 minutes later, one fisherman says to the other "fill the bucket up with water and see if the water is salty."
He dips the bucket in the stream and drinks some. "Nope. Still salty." 30 minutes later, he asks him to check again.
"Nope, still salty." One our later they check again. "Nope. Still salty."
"This isn't good," the fisherman finally says. "We have been walking for almost two hours and the water is still salty!"
"I know," says the other. "And the bucket is almost empty!"
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Indelible pencil

In 1866, the first U.S. patent for an indelible pencil was issued to Edson P Clark of Northampton, Mass. as an "Producing Indelible Writing on Linen and other Fabrics" (No. 56,180). The pencil-lead was composed of gypsum (a hard moisture-resistance compound) and black lead (coloring agent, with optional asphaltum or lamp-black) and silver nitrate. It is the silver nitrate which blackens to make the indelible mark by the action of light or heat. The black lead and gypsum permit the pencil to be readily pointed. The patent described cementing the filling with shellac into grooved cedar wood. Clark held an earlier patent for an indelible composition, but described without the wood jacket (No. 24,195 on 31 May 1859).
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