BRAIN TEASERS

# 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.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #mastermind

### Free Drinks For Everyone

One night, a drunk comes stumbling into a bar and says to the bartender: "Drinks for all on me including you, bartender." So the bartender follows the mans orders and says: "That will be \$36.50 please." The drunk says he has no money so the bartender slaps him around and throws him out.
The next night the same drunk comes in again and orders a drink for everyone in the bar including the bartender. Again the bartender follows instructions and again the drunk says he has no money. So the bartender slaps him around and throws him out.
On the third night he comes in, the drunk orders drinks for all except the bartender. "What, no drink for me?" replies the bartender. "Oh, no. You get violent when you drink."
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## Brain Teasers

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### Patent leather

In 1819, the first patent leather manufactured in the U.S. was produced in Newark, N.J., by Seth Boyden (17 Nov 1788-31 Mar 1870) at the tannery he had established in 1813. At first, the varnish was dried in the heat of the sun, but was later dried in a wam room. In 1820, Boyden made an oven able to hold 16 skins. This leather, treated with a coating based on linseed-oil to give it a high gloss finish, was mostly used for fancy work and for shoes. Boyden is remembered for a variety of other inventions, including malleable cast iron, a nail-making machine, a cut-off switch for steam engines, a method for producing zinc from its ore and developed a hybrid strawberry.«
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