BRAIN TEASERS
The Most Difficult Tasks (page 91)

The Most Difficult Tasks (page 91)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 901 to 910.
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Find number abc

If c89b8 - 11a95 = ba1cb find number abc. Multiple solutions may exist.
Correct answers: 1
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (3, 4, 7, 8, 12, 13, 14, 23, 27, 32, 62) 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
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Find number abc

If 327b4 + 182a7 = ca971 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

A little boy comes down for br...

A little boy comes down for breakfast and his mother asks if he had done his chores. “Not yet,” says the little boy.
His mother tells him that until he completes them, he won't be getting any breakfast.
Well, he's a little angry, so he goes to feed the chickens and kicks one. He goes to feed the cows, and kicks a cow as well. He goes to feed the pigs, and he kicks a pig.
He goes back in for breakfast and his mother gives him a bowl of dry cereal. “How come I don't get any eggs and bacon? Why don't I have any milk in my cereal?” he asks.
“Well,” his mother says, “I saw you kick a chicken, so you don't get any eggs for a week. I saw you kick the pig, so you don't get any bacon for a week either. I also saw you kick the cow, so for a week you aren't getting any milk.”
Just then, his father comes down for breakfast and kicks the cat half way across the kitchen.
The little boy looks up at his mother with a smile and says, “Are you going to tell him, or shall I?”
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Calculate the number 5698

NUMBERMANIA: Calculate the number 5698 using numbers [3, 3, 8, 6, 93, 806] 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 6bcaa - aaaba = 5a690 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 2036

NUMBERMANIA: Calculate the number 2036 using numbers [6, 4, 3, 3, 16, 615] 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 cc544 + 2b3a5 = 1a5b49 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 1643

NUMBERMANIA: Calculate the number 1643 using numbers [5, 4, 6, 2, 97, 439] 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 57587 - 3c5b1 = a30ab find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
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MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (2, 4, 8, 29, 31, 35, 54, 55, 56, 60, 99) 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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Jesse Douglas

Born 3 Jul 1897; died 7 Oct 1965 at age 68.American mathematician who was awarded one of the first two Fields Medals in 1936 for solving the Plateau problem. which had first been posed by the Italian-French mathematician Joseph-Louis Lagrange in 1760. The Plateau problem is one of finding the surface with minimal area determined by a fixed boundary. Experiments (1849) by the Belgian physicist Joseph Plateau demonstrated that the minimal surface can be obtained by immersing a wire frame, representing the boundaries, into soapy water. Douglas developed what is now called the Douglas functional, so that by minimizing this functional he could prove the existence of the solution to the Plateau problem. Douglas later developed an interest in group theory.
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