BRAIN TEASERS
The Most Difficult Tasks (page 87)

The Most Difficult Tasks (page 87)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 861 to 870.
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Find number abc

If 5c5ba - 373b6 = c4c94 find number abc. Multiple solutions may exist.
Correct answers: 1
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Calculate the number 1085

NUMBERMANIA: Calculate the number 1085 using numbers [6, 7, 1, 7, 20, 956] 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 9cab9 + 5cc3a = 15bcc9 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

Stay out of the dorms...

On the first day of college, the Dean addressed the students, pointing out some of the rules.

"The female dormitory will be out-of-bounds for all male students, and the male dormitory to the female students. Anybody caught breaking this rule will be fined $25 the first time."

He continued, "Anybody caught breaking this rule the second time will be fined $50. Being caught a third time will incur a hefty fine of $100. Are there any questions?"

At this point, a male student in the crowd inquired:

"How much for a season pass?"

Jokes of the day - Daily updated jokes. New jokes every day.
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Calculate the number 4405

NUMBERMANIA: Calculate the number 4405 using numbers [1, 4, 5, 3, 30, 864] 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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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (2, 5, 8, 21, 24, 27, 37, 40, 43, 98) 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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Find number abc

If 6cba7 - a8779 = bb6c8 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 (21, 22, 24, 25, 26, 27, 39, 42, 44, 48, 51) 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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Calculate the number 1380

NUMBERMANIA: Calculate the number 1380 using numbers [5, 4, 1, 2, 35, 196] 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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Calculate the number 3490

NUMBERMANIA: Calculate the number 3490 using numbers [4, 4, 6, 7, 54, 693] 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 (10, 12, 13, 20, 22, 23, 32, 33, 70, 72, 73) 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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