BRAIN TEASERS

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

### A beautiful young girl is abou...

A beautiful young girl is about to undergo a minor operation. She's laid on a hospital trolley bed with nothing on, except a sheet over her. The nurse pushes the trolley down the corridor towards the operating theater, where she leaves the girl on the trolley outside, while she goes in to check whether everything is ready.
A young man wearing a white coat approaches, lifts the sheet up and starts examining her naked body. He puts the sheet back and then walks away and talks to another man in a white coat.
The second man comes over, lifts the sheet and does the same examinations.
When a third man does the same thing, but more closely, she grows impatient and says: "All these examinations are fine and appreciated, but when are you going to start the operation?"
The man in the white coat shrugged his shoulders: "I have no idea. We're just painting the corridor."
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## Brain Teasers

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### Rotary disk plow

In 1896, Clement Hardy was issued a patent for the rotary disk plow (No. 556,972). His patent described a rotary-disk plow constructed with one or more plowing disks arranged diagonally to the line of draft and suitable supported by furrow and landside wheels and a suitable metal or wooden frame. The plow disks were designed to be drawn into the earth by their own action and by the weight of the soil lifted by the disks and carried on their faces and have a cutting action on the bottom of the furrow instead of scraping, thereby enabling much reduction of the machinery's weight that had previously been thought necessary in this class of plows in order to force the disks into the soil and hold them to their work.[Image: top view, showing seat to left of rear wheel.]
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