BRAIN TEASERS
The Most Difficult Tasks (page 685)

The Most Difficult Tasks (page 685)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 6841 to 6850.
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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: 69
The first user who solved this task is On On Lunarbasil.
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#brainteasers #mastermind
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How much money did Darlene start with?

Franklin lent Darlene as much money as she already had, then she spent $10. The next day, Franklin lent her as much money as she now had and again, she spent $10. On the third day Franklin once again lent her as much money as she now had and she spent $10, leaving her broke. How much money did Darlene start with? Express result to the accuracy of 2 decimal.
Correct answers: 69
The first user who solved this task is Roxana zavari.
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#brainteasers #math #riddles
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Can you name the athletes by the picture?

Can you name the athletes by the picture?
Correct answers: 69
The first user who solved this task is Erkain Mahajanian.
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#brainteasers #riddles #sport

Note from Mother

On the first day of school, a first-grader handed his teacher a note from his mother. The note read...
"The opinions expressed by this child are not necessarily those of his parents."

Jokes of the day - Daily updated jokes. New jokes every day.
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Find number abc

If caa24 - c27bc = 38ab find number abc. Multiple solutions may exist.
Correct answers: 69
The first user who solved this task is Roxana zavari.
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#brainteasers #math
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Remove 7 letters from this s...

Remove 7 letters from this sequence (ENSTLEROTAEINAMJENUT) to reveal a familiar English word.
Correct answers: 69
The first user who solved this task is Sanja Šabović.
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#brainteasers #wordpuzzles
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Find the area of the shaded ...

Find the area of the shaded region accurate up to 3 decimal places.
Correct answers: 69
The first user who solved this task is Erkain Mahajanian.
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#brainteasers #math
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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: 69
The first user who solved this task is Roxana zavari.
CHECK ANSWER
#brainteasers #mastermind
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Guess the name of musician

Look carefully caricature and guess the name of musician.
Correct answers: 69
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #music
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Find number abc

If b6446 + c2a3a = 14b2a4 find number abc. Multiple solutions may exist.
Correct answers: 69
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math
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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: 69
The first user who solved this task is Sanja Šabović.
CHECK ANSWER
#brainteasers #mastermind
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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.
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Elmer Sperry

Born 12 Oct 1860; died 16 Jun 1930 at age 69.Elmer Ambrose Sperry was an American engineer and inventor who devised the gyrocompass. In the 1890's he made useful inventions in electric mining machinery, and patent electric brake and control system for street- or tramcars. In 1908, he patented the active gyrostabilizer which acted to stop a ship's roll as soon as it started. He patented the first gyrocompass designed expressly for the marine environment in 1910. This "spinning wheel" gyro was a significant improvement over the traditional magnetic compass of the day and changed the course of naval history. The first Sperry gyrocompass was tested at-sea aboard the USS Delaware in 1911 and established Sperry as a world leader in the manufacture of military gyrocompasses for the next 80 years.
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