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 number abc

If b260c - 6a0a1 = 351b find number abc. Multiple solutions may exist.
Correct answers: 4
The first user who solved this task is Nasrin 24 T.
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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: 5
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 1866

NUMBERMANIA: Calculate the number 1866 using numbers [5, 6, 1, 8, 89, 237] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #numbermania

Working late

It had taken him several months, but the executive vice president had finally persuaded his new secretary to bend over the back of his leather couch and allow him to have sex with her that way.

"And just where have you been until this hour?" demanded his wife, when the wayward husband finally arrived home.

"Down at the office," he replied, "working like a dog."

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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (21, 22, 24, 25, 26, 28, 31, 32, 34, 50, 77) 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: 3
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 89c99 - a80cc = cbc33 find number abc. Multiple solutions may exist.
Correct answers: 10
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: 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 1553

NUMBERMANIA: Calculate the number 1553 using numbers [2, 2, 4, 2, 43, 755] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
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 9c55c + 8a06c = a736ab find number abc. Multiple solutions may exist.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
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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: 17
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5877

NUMBERMANIA: Calculate the number 5877 using numbers [1, 2, 8, 4, 36, 945] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #numbermania
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U.S. DNA Identification Act signed

In 1994, the U.S. DNA Identification Act was signed into law by President Clinton, as part of comprehensive federal crime legislation. Although it authorized the FBI director to establish a national DNA database, the system did not become operational until 1998. The Combined DNA Identification System (acronym CODIS) was designed to enable the states to pool the crime-investigation resources of the separate DNA databases held locally within each state. The central index would include identification records of criminals, and forensic analyses of DNA samples collected from crime scenes and unidentified human reamins. The Act included requirements for proficiency testing and privacy protection requirements, with penalties for violations. By Nov 2011, 198 laboratories were participating,«
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