What a winning combination?
[1970] What a winning 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: 65 - The first user who solved this task is Djordje Timotijevic
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What a winning 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: 65
The first user who solved this task is Djordje Timotijevic.
#brainteasers #mastermind
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Welfare Office

A woman went down to the Welfare Office to get aid.

The office worker asked her, "How many children do you have?"

"Ten," she replied.

"What are their names?" he asked.

"David, David, David, David, David, David, David, David, David and David," she answered.

"They're all named David?" he asked "What if you want them to come in from playing outside?"

"Oh, that's easy," she said. "I just call 'David,' and they all come running in."

"And, if you want them to come to the table for dinner?"

"I just say, 'David, come eat your dinner'," she answered.

"But what if you just want ONE of them to do something?" he asked.

"Oh, that's easy," she said. "I just use their last name!"

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Black American invention

In 1888, a U.S. patent was issued for the railway signal to the Black American inventor, A.B. Blackburn (No. 376,362). The type of signal was that designed to be operated by the wheels of a train. A lever was depressed as a train wheel travelled over it, to remotely operate an alert through a mechanical linkage upon the passing of the train. It was designed for use upon a single track railway line for trains passing in one direction. To provide a signal for trains passing in the opposite direction, a similar apparatus would be applied on the opposite rail. This patent was an improvement in mechanical design of his earlier patent No. 309,517 on 23 Dec 1884, in which he also described how a gong was activated to provide the alert.«[Image: detail from patent diagram showinf device beside a section of rail.]
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