BRAIN TEASERS
Monthly Archive - August 2019

Monthly Archive - August 2019

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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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: 32
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #mastermind
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Calculate the number 877

NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
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 (4, 5, 7, 10, 11, 13, 23, 24, 26, 88) 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: 12
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare

I was wondering why the ball k...

I was wondering why the ball kept getting bigger and bigger, and then it hit me.
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Find number abc

If aac67 - 2b20c = b26a9 find number abc. Multiple solutions may exist.
Correct answers: 22
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: 21
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5613

NUMBERMANIA: Calculate the number 5613 using numbers [6, 9, 4, 2, 31, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
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 75849 + 856ac = b6b479 find number abc. Multiple solutions may exist.
Correct answers: 21
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#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: 22
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 362

NUMBERMANIA: Calculate the number 362 using numbers [5, 5, 1, 7, 20, 279] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
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 (11, 12, 17, 30, 31, 36, 44, 68, 69, 74) 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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Neil Bartlett

Born 15 Sep 1932; died 5 Aug 2008 at age 75.English-American chemist who formed the first compound with a noble gas element, xenon platinofluoride, XePtF6 (23 Mar 1962), a yellow-orange crystalline solid, stable at room temperature by immersing platinum fluoride in xenon gas. For a half-century since Ramsay discovered xenon, it had, with the other elements in its group on the Periodic Table, been known as an inert gas. After Bartlett's discovery, a new field of investigation was opened, and other chemists found further compounds of not only xenon, but the noble gas elements radon and krypton. The heaviest elements of the noble gases, as the least inert, were susceptible to combination with a highly reactive element. Pauling had proposed this in theoretical calculations made thirty years before Bartlett's experimental success.«
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