BRAIN TEASERS
Brain Teasers

Brain Teasers

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 1 to 10.
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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: 8
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 770

NUMBERMANIA: Calculate the number 770 using numbers [2, 6, 5, 5, 15, 765] 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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Find number abc

If 9a1c5 - a9b17 = a516c find number abc. Multiple solutions may exist.
Correct answers: 9
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math

It's the drinking...

The patient was lying in bed, still groggy from the effects of the recent operation. His doctor came in, looking very glum.

"I can't be sure what's wrong with you," the doctor said. "I think it's the drinking."

"Okay," the patient said. "Can we get an opinion from a doctor who's sober?"

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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.
Correct answers: 12
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 7350

NUMBERMANIA: Calculate the number 7350 using numbers [8, 9, 3, 6, 88, 621] 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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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (15, 16, 17, 25, 26, 27, 33, 54, 55, 56, 61) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B*C.
Correct answers: 9
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #magicsquare
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Find number abc

If b1451 - 6ab3c = 1b6a1 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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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.
Correct answers: 18
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4708

NUMBERMANIA: Calculate the number 4708 using numbers [5, 5, 2, 5, 91, 856] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 6a9b0 - 4b404 = 1cc66 find number abc. Multiple solutions may exist.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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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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Kingsley Davis

Born 20 Aug 1908; died 27 Feb 1997 at age 88. American sociologist and demographer who was a world-renowned expert on population trends; he coined the terms population explosion and zero population growth and promoted methods of bringing the latter about. His specific studies of American society led him to work on a general science of world society, based on empirical analysis of each society in its habitat. Later, however, he came to be concerned about low birthrates in developed countries, fearing a shortage of educated leaders.
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