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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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (6, 7, 10, 22, 23, 26, 45, 64, 65, 68) 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
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 b12a1 - 76c46 = 14b0a find number abc. Multiple solutions may exist.
Correct answers: 6
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: 11
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind

A Push Please

A man is in bed with his wife when there is a knock at the door. He rolls over and looks at his clock, and it's 3:30 in the morning. "I'm not getting out of bed at this time," he thinks, and rolls over.
Then a louder knock follows. "Aren't you going to answer that?" says his wife. So he drags himself out of bed and goes downstairs. He opens the door and there is a man standing on the porch. It didn't take the homeowner long to realize the man was drunk.
"Hi there," slurs the stranger. "Can you give me a push??"
"No, get lost! It's half past three. I was in bed," says the man and he slams the door. He goes back up to bed and tells his wife what happened and she says, "That wasn't very nice of you. Remember that night we broke down in the pouring rain on the way to pick the kids up from the babysitter and you had to knock on that man's house to get us started again? What would have happened if he'd told us to get lost?"
"But the guy was drunk," says the husband. "It doesn't matter," says the wife. "He needs our help and it would be the Christian thing to help him."
So the husband gets out of bed again, gets dressed, and goes downstairs. He opens the front door, and not being able to see the stranger anywhere he shouts, "Hey, do you still want a push?" And he hears a voice cry out, "Yeah, please." So, still being unable to see the stranger he shouts, "Where are you?"

And the drunk replies, "Over here, on the swing."

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Calculate the number 1319

NUMBERMANIA: Calculate the number 1319 using numbers [5, 1, 4, 2, 51, 532] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is NĂ­lton CorrĂȘa de Sousa.
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#brainteasers #math #numbermania
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Find number abc

If a8cba - 6c49b = b3026 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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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.
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#brainteasers #mastermind
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Calculate the number 8173

NUMBERMANIA: Calculate the number 8173 using numbers [8, 5, 7, 4, 30, 620] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
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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 (4, 5, 9, 10, 21, 24, 25, 26, 28, 29, 76) 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: 7
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 68980 + bcb4a = a4abca find number abc. Multiple solutions may exist.
Correct answers: 13
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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The aim is to place the some numbers from the list (6, 7, 10, 22, 23, 26, 45, 64, 65, 68) 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.
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Sydney Chapman

Died 16 Jun 1970 at age 82 (born 29 Jan 1888).English mathematician and physicist noted for his research in geophysics. After graduation (1910) he worked at the Greenwich Observatory, but returned to Cambridge upon the outbreak of WW I. Between 1915 and 1917 he completed a series of important papers on thermal diffusion and the fundamentals of gas dynamics. He developed systematic approximations to the Maxwell-Boltzmann formulation for the velocity distribution function for interacting particles under general force laws. During WW II he worked on military operational research and incendiary bomb problems. Chapman's main area of research was geomagnetism, beginning in 1913 and extending to terrestrial and interplanetary magnetism, the ionosphere and the aurora borealis.
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