BRAIN TEASERS
Monthly Archive - December 2021

Monthly Archive - December 2021

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 292

NUMBERMANIA: Calculate the number 292 using numbers [3, 3, 8, 7, 37, 175] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
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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 (1, 2, 4, 5, 6, 8, 42, 43, 44, 46, 67) 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
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#brainteasers #math #magicsquare
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Find number abc

If 25aab - ccc22 = ca327 find number abc. Multiple solutions may exist.
Correct answers: 15
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#brainteasers #math

The strong young man at the co...

The strong young man at the construction site was bragging that he could outdo anyone in a feat of strength. He made a special case of making fun of one of the older workmen. After several minutes, the older worker had had enough. "Why don't you put your money where your mouth is," he said. "I will bet a week's wages that I can haul something in a wheelbarrow over to that outbuilding that you won't be able to wheel back." "You're on, old man," the braggart replied. "Let's see what you got." The old man reached out and grabbed the wheelbarrow by the handles. Then, nodding to the young man, he said, "All right. Get in."
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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: 8
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#brainteasers #mastermind
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Calculate the number 343

NUMBERMANIA: Calculate the number 343 using numbers [6, 3, 2, 6, 71, 420] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
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#brainteasers #math #numbermania
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Find number abc

If cc4c5 - c00b4 = c4a1 find number abc. Multiple solutions may exist.
Correct answers: 37
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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: 7
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 514

NUMBERMANIA: Calculate the number 514 using numbers [9, 2, 6, 3, 99, 443] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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 (7, 8, 9, 13, 26, 28, 32, 40, 42, 44, 48) 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: 4
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 788ac - a5aa9 = b3b9b find number abc. Multiple solutions may exist.
Correct answers: 10
CHECK ANSWER
#brainteasers #math
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Cecilia Payne

Died 7 Dec 1979 at age 79 (born 10 May 1900).Cecilia Helena Payne-Gaposchkin was an English-American astronomer who was the first to apply laws of atomic physics to the study of the temperature and density of stellar bodies, and the first to conclude that hydrogen and helium are the two most common elements in the universe. During the 1920s, the accepted explanation of the Sun's composition was a calculation of around 65% iron and 35% hydrogen. At Harvard University, in her doctoral thesis (1925), Payne claimed that the sun's spectrum was consistent with another solution: 99% hydrogen with helium, and just 1% iron. She had difficulty persuading her superiors to take her work seriously. It was another 20 years before Payne's original claim was confirmed, by Fred Hoyle.
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