BRAIN TEASERS
Monthly Archive - July 2019

Monthly Archive - July 2019

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Find number abc

If b829a + 3cc29 = 994c9 find number abc. Multiple solutions may exist.
Correct answers: 25
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: 24
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 2725

NUMBERMANIA: Calculate the number 2725 using numbers [7, 9, 3, 5, 18, 312] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Fazil Hashim.
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#brainteasers #math #numbermania

The Young Executive & The Blonde CEO

A young executive was leaving the office late one evening when he found the Blonde CEO standing in front of a shredder with a piece of paper in his hand.
'Listen,' said the CEO, 'this is a very sensitive and important document here, and my secretary has gone for the night. Can you make this thing work for me?'
'Certainly,' said the young executive. He turned the machine on, inserted the paper, and pressed the start button.
'Excellent, excellent!' said the CEO, as his paper disappeared inside the machine. 'I just need one copy...'

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Find number abc

If c79c3 - baabb = 9bbc find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nílton Corrêa de Sousa.
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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: 27
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 695

NUMBERMANIA: Calculate the number 695 using numbers [1, 7, 7, 3, 45, 647] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 19
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (10, 12, 13, 14, 15, 17, 32, 33, 35, 37, 74, 92) 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: 14
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 c7aac + 913a3 = 1b8cb8 find number abc. Multiple solutions may exist.
Correct answers: 33
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: 28
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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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: 13
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Norman de Bruyne

Born 8 Nov 1904; died 7 Mar 1997 at age 92.Dutch inventor who helped to transform aircraft construction by developing strong new lightweight materials and synthetic glues. In 1928, he joined Ernest Rutherford at his Cavendish Laboratory in atomic research. Subsequently developing an interest in flying, by 1934 he started his own company, Aero Research to research his invention of a new form of synthetic glue. The long-established casein glues used until then in the building of wooden aircraft were seriously affected in hot and humid conditions. His own revolutionary cantilever-wing “Snark”monoplane utilized his new bonding methods. Later, his metal-to-metal bonding of lightweight and very strong aluminium honeycomb aircraft structures were extensively used during WW II.[Born in Chile to Dutch parents. Educated and spent most of his life in England. Late in life emigrated and took American citizenship, but returned to England.]
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