BRAIN TEASERS
The Most Difficult Tasks

The Most Difficult Tasks

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate 876+876-876

If 123+741-900=2196 and 900+144-876=6569 then 876+876-876=?
Correct answers: 4
The first user who solved this task is Sanja Šabović.
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#brainteasers #math #riddles
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Calculate the number 3112

NUMBERMANIA: Calculate the number 3112 using numbers [8, 7, 6, 6, 60, 402] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Decrypt hidden message

Can you decrypt hidden message (1C42 92S1 T5B38 OV1 IS B3LT5B38S 1C4ROVGC4)?
Correct answers: 5
The first user who solved this task is Sanja Šabović.
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#brainteasers #wordpuzzles #riddles

A guy was on trial for murder...

A guy was on trial for murder and if convicted, would get the electric chair. His brother found out that a redneck was on the jury and figured he would be the one to bribe. He told the redneck that he would be paid $10,000 if he could convince the rest of the jury to reduce the charge to manslaughter.
The jury was out an entire week and returned with a verdict of manslaughter.
After the trial, the brother went to the redneck's home, told him what a great job he had done and paid him the $10,000.
The redneck replied that it wasn't easy to convince the rest of the jury to change the charge to manslaughter. They all wanted to let him go.
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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: 6
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #mastermind
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Replace asterisk symbols with ...

Replace asterisk symbols with a letters (*** ***E*S) and guess the name of musician band. Length of words in solution: 3,6.
Correct answers: 6
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #music
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Replace asterisk symbols with ...

Replace asterisk symbols with a letters (*****I*N) and guess the name of musician band. Length of words in solution: 8.
Correct answers: 6
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #music
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Find number abc

If c7aac + 913a3 = 1b8cb8 find number abc. Multiple solutions may exist.
Correct answers: 7
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 989

NUMBERMANIA: Calculate the number 989 using numbers [5, 2, 5, 7, 40, 882] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Calculate the number 3221

NUMBERMANIA: Calculate the number 3221 using numbers [8, 7, 4, 5, 71, 860] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Calculate the number 5389

NUMBERMANIA: Calculate the number 5389 using numbers [7, 7, 1, 7, 27, 750] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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If 759ab - cc620 = ababb find number abc. Multiple solutions may exist.
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Joseph Rogers Brown

Died 23 Jul 1876 at age 66 (born 26 Jan 1810).American inventor and manufacturer who made numerous advances in the field of fine measurement and machine-tool production. He perfected and produced a highly accurate linear dividing engine in 1850, and in the succeeding two years he developed a vernier caliper reading to thousandths of an inch and also applied vernier methods to the protractor. Brown's micrometer caliper, widely used in industry, appeared in 1867. He also invented a precision gear cutter in 1855 to produce clock gears, a universal milling machine in 1862, and, perhaps his finest innovation, a universal grinding machine (patented in 1877), in which articles were hardened first and then ground, thereby increasing accuracy and eliminating waste. Cofounded J.R. Brown & Sharpe in 1853.[Image: Brown's universal milling machine]
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