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The Most Difficult Tasks (page 64)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 631 to 640. |
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
Find number abc
)
If b492c + 4ba50 = a8cac 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/2026/08/27/magic-square-1787789144.png','/MAGIC-SQUARE-Calculate-A-B-C/8818'))
The aim is to place the some numbers from the list (1, 4, 5, 20, 21, 24, 25, 50, 53, 54, 81) 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
You Fool
A pastor was opening his mail one morning and one envelope had only a single sheet of paper with a single word printed on it: “FOOL!”
The following Sunday the priest announced, “I have known many people who have written letters and forgotten to sign their name. But this week I received a letter from someone who signed his name and had forgotten to write a letter.”
The following Sunday the priest announced, “I have known many people who have written letters and forgotten to sign their name. But this week I received a letter from someone who signed his name and had forgotten to write a letter.”
Find number abc
)
If 9acb5 + 9a603 = b9c3ba find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Calculate the number 1450
. Each of the numbers can be used only once.','/archive/2026/08/24/numbermania-1787529901.png','/calculate-the-number-1450/8815'))
NUMBERMANIA: Calculate the number 1450 using numbers [8, 5, 2, 3, 12, 737] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
Find number abc
)
If 576a5 + a1a56 = bb1c1 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Find number abc
)
If 65c5b - b5ac3 = 3a50a find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Find number abc
)
If c9b81 + 9baca = 1ca8ab find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Find the right combination
. 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.','/archive/2026/04/07/mastermind-1775520301.png','/Find-the-right-combination/8680'))
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: 1
#brainteasers #mastermind
Find the right combination
. 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.','/archive/2026/04/04/mastermind-1775261101.png','/Find-the-right-combination/8677'))
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: 1
#brainteasers #mastermind
