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The Most Difficult Tasks (page 3)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30. |
Calculate the number 1689
. Each of the numbers can be used only once.','/archive/2026/06/08/numbermania-1780877101.png','/calculate-the-number-1689/8740'))
NUMBERMANIA: Calculate the number 1689 using numbers [5, 3, 1, 1, 28, 559] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Which is a winning combination of digits?
. 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/2026/06/06/mastermind-1780704301.png','/Which-is-a-winning-combination-of-digits/8738'))
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: 0
#brainteasers #mastermind
Calculate the number 1346
. Each of the numbers can be used only once.','/archive/2026/06/05/numbermania-1780617901.png','/calculate-the-number-1346/8737'))
NUMBERMANIA: Calculate the number 1346 using numbers [1, 3, 8, 5, 91, 479] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
There were these two blondes d...
There were these two blondes driving along the highway looking for a place to stop and picnic.
The first blonde says, "Let's stop here, and have our picnic under that tree."
The other says, "No! Let's have it right here in the middle of the road."
They argued about it for a bit, but finally agreed to have it in the middle of the road.
All of a sudden, a car comes speeding towards them and has to swerve into the tree to keep from hitting them.
The one blonde says to the other, "See? If we were under that tree, we'd be dead now!"
The first blonde says, "Let's stop here, and have our picnic under that tree."
The other says, "No! Let's have it right here in the middle of the road."
They argued about it for a bit, but finally agreed to have it in the middle of the road.
All of a sudden, a car comes speeding towards them and has to swerve into the tree to keep from hitting them.
The one blonde says to the other, "See? If we were under that tree, we'd be dead now!"
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/2026/06/04/magic-square-1780531529.png','/MAGIC-SQUARE-Calculate-A-B-C/8736'))
The aim is to place the some numbers from the list (5, 6, 11, 13, 14, 19, 29, 31, 32, 37) 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: 0
#brainteasers #math #magicsquare
Find number abc
)
If c708b - 78aa0 = 1886b find number abc. Multiple solutions may exist. Correct answers: 0
#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/2026/06/02/mastermind-1780358701.png','/Find-the-right-combination/8734'))
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: 0
#brainteasers #mastermind
Calculate the number 1421
. Each of the numbers can be used only once.','/archive/2026/06/01/numbermania-1780272301.png','/calculate-the-number-1421/8733'))
NUMBERMANIA: Calculate the number 1421 using numbers [9, 4, 1, 2, 74, 383] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If baacc + 2a311 = 122baa find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
Which is a winning combination of digits?
. 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/2026/05/30/mastermind-1780099502.png','/Which-is-a-winning-combination-of-digits/8731'))
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: 0
#brainteasers #mastermind
Calculate the number 7592
. Each of the numbers can be used only once.','/archive/2026/05/29/numbermania-1780013101.png','/calculate-the-number-7592/8730'))
NUMBERMANIA: Calculate the number 7592 using numbers [5, 8, 9, 3, 42, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
