BRAIN TEASERS
Monthly Archive - June 2023 (page 3)

Monthly Archive - June 2023 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
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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: 3
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#brainteasers #mastermind
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Calculate the number 366

NUMBERMANIA: Calculate the number 366 using numbers [3, 8, 7, 7, 78, 142] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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 (1, 4, 5, 6, 7, 22, 23, 24, 29, 30, 31) 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: 1
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#brainteasers #math #magicsquare

A mother-in-law sent two ties...

A mother-in-law sent two ties to her son-in-law. Some weeks later, she was invited for lunch, and so he wore one of them in the hope of pleasing her.
The meal was a tense and uncomfortable one, with the mother-in-law maintaining a stony silence.
Finally she spoke. "Alright, what's wrong with the other tie?"
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Find number abc

If 9c79b - bcaa6 = 404b9 find number abc. Multiple solutions may exist.
Correct answers: 8
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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: 7
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4011

NUMBERMANIA: Calculate the number 4011 using numbers [8, 5, 5, 9, 84, 660] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If 9c50b + b79aa = bbbaa5 find number abc. Multiple solutions may exist.
Correct answers: 6
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: 3
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4288

NUMBERMANIA: Calculate the number 4288 using numbers [1, 4, 3, 1, 61, 846] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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 (2, 4, 11, 12, 13, 14, 15, 21, 22, 38, 62, 69) 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: 1
CHECK ANSWER
#brainteasers #math #magicsquare
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Helium liquefied

In 1908, Kamerlingh Onnes made helium liquid at a temperature of 4.2 K (about -269 ºC). He had worked for many years to liquify this element which persisted as a gas to the lowest temperature. Using liquid air to produce liquid hydrogen and then the hydrogen to jacket the liquification apparatus, he produced about 60 cubic centimeters of liquid helium. The gas was liquefied by compressing it, cooling it below the inversion temperature and then allowing it to expand, which causes further cooling resulting in the liquefaction of some of the gas. At his cryogenic laboratory, he had previously liquefied air (1892) in large quantities, and built a large hydrogen liquefier (1906). Onnes received the Nobel Prize in 1913 for his low temperature work.
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