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The Most Difficult Tasks (page 67)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 661 to 670. |
MAGIC SQUARE: Calculate A*B+C
 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.','/archive/2026/09/17/magic-square-1789603545.png','/MAGIC-SQUARE-Calculate-A-B-C/8839'))
The aim is to place the some numbers from the list (9, 10, 14, 15, 16, 21, 29, 62, 63, 69, 75) 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
#brainteasers #math #magicsquare
Find number abc
)
If 89bc0 - ca10b = bba2b find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Calculate the number 670
. Each of the numbers can be used only once.','/archive/2026/09/14/numbermania-1789344301.png','/calculate-the-number-670/8836'))
NUMBERMANIA: Calculate the number 670 using numbers [3, 2, 3, 3, 55, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
How Do You Like Your Steak
Waiter: How do you like your steak, sir?
Sir: Like winning an argument with my wife.
Waiter: Rare it is.
Find number abc
)
If 8b3ba - aca1b = 106c2 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
MAGIC SQUARE: Calculate A*B+C
 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.','/archive/2026/09/10/magic-square-1788998768.png','/MAGIC-SQUARE-Calculate-A-B-C/8832'))
The aim is to place the some numbers from the list (2, 4, 7, 8, 9, 13, 21, 23, 27, 59, 79, 95) 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
#brainteasers #math #magicsquare
Calculate the number 5096
. Each of the numbers can be used only once.','/archive/2026/09/07/numbermania-1788739501.png','/calculate-the-number-5096/8829'))
NUMBERMANIA: Calculate the number 5096 using numbers [2, 6, 8, 8, 52, 586] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
Find number abc
)
If a99b6 + 1aa1b = 7a4c8 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
MAGIC SQUARE: Calculate A+B+C
 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.','/archive/2026/09/03/magic-square-1788393974.png','/MAGIC-SQUARE-Calculate-A-B-C/8825'))
The aim is to place the some numbers from the list (4, 7, 8, 9, 12, 13, 19, 44, 47, 48, 62, 97) 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
#brainteasers #math #magicsquare
Find number abc
)
If 129ac + c1aab = 9ba32 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Calculate the number 323
. Each of the numbers can be used only once.','/archive/2026/08/31/numbermania-1788134702.png','/calculate-the-number-323/8822'))
NUMBERMANIA: Calculate the number 323 using numbers [4, 4, 6, 6, 29, 125] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
