BRAIN TEASERS
Monthly Archive - December 2020

Monthly Archive - December 2020

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (13, 15, 17, 27, 29, 31, 56, 65, 67, 69, 91, 97) 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: 11
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare
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Find number abc

If 3c037 + 70b0a = 10cba1 find number abc. Multiple solutions may exist.
Correct answers: 38
The first user who solved this task is NĂ­lton CorrĂȘa de Sousa.
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#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: 29
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind

Tell The Whole Truth

Mr. Dewey was briefing his client, who was about to testify in his own defense.
"You must swear to tell the complete truth. Do you understand?"
The client replied that he did.
Then lawyer then asked, "Do you know what will happen if you don't tell the truth?"
The client looked back and said, "I imagine that our side will win."
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Calculate the number 709

NUMBERMANIA: Calculate the number 709 using numbers [1, 9, 1, 4, 29, 684] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #numbermania
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Find number abc

If 2c9bc + 47976 = 7388a find number abc. Multiple solutions may exist.
Correct answers: 28
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: 41
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1160

NUMBERMANIA: Calculate the number 1160 using numbers [1, 1, 2, 9, 67, 422] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
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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, 17, 25, 27, 29, 37, 40, 42, 43, 50, 52, 91) 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: 11
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 605ca + 523b3 = aa29ab find number abc. Multiple solutions may exist.
Correct answers: 17
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#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: 19
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Rotolactor

In 1930, the Rotolactor, invented by Henry W. Jeffries, was housed in the lactorium of the Walker Gordon Laboratory Company, Inc., at Plainsboro, N.J. This was a 50-stall revolving platform that enabled the milking of 1,680 cows in seven hours by rotating them into position with the milking machines. A Rotolactor was displayed at the 1939 New York World's Fair as part of the "Dairy World of Tomorrow," exhibit in the Borden building. The glass-enclosed revolving Rotolactor platform carried 150 pedigreed cows were washed, dried, and mechanically milked twice daily. A favorite attraction of the Food Zone, the Rotolactor epitomized how technology advanced the production of such a widely-used product as milk.
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