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Monthly Archive - May 2026brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |
Find number abc
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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
A Very Minor Sin
A famous professor of surgery died and went to heaven. At the pearly gates he was asked by the gatekeeper, "Have you ever committed a sin you truly regret?""Yes," the professor answered. "When I was a young candidate at the Hospital of Saint Lucas, we played soccer against a team from the Community Hospital, and I scored a goal, which was off-side. But the referee did not see it, and the goal won us the match. I regret that now."
"Well," said the gatekeeper. "That is a very minor sin. You may enter."
"Thank you very much, Saint Peter," the professor answered.
"You're welcome, but I am not Saint Peter," said the gatekeeper. "He is having his lunch break. I am Saint Lucas."
"Well," said the gatekeeper. "That is a very minor sin. You may enter."
"Thank you very much, Saint Peter," the professor answered.
"You're welcome, but I am not Saint Peter," said the gatekeeper. "He is having his lunch break. I am Saint Lucas."
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/2026/05/28/magic-square-1779926727.png','/MAGIC-SQUARE-Calculate-A-B-C/8729'))
The aim is to place the some numbers from the list (16, 17, 22, 28, 29, 34, 45, 60, 61, 66) 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 c89a9 - 1b92c = 2104a find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
Find number abc
)
If 12bbc + 225c6 = bcaa0 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/2026/05/23/mastermind-1779494701.png','/Which-is-a-winning-combination-of-digits/8726'))
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 1314
. Each of the numbers can be used only once.','/archive/2026/05/22/numbermania-1779408302.png','/calculate-the-number-1314/8725'))
NUMBERMANIA: Calculate the number 1314 using numbers [9, 8, 4, 9, 68, 829] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
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/2026/05/21/magic-square-1779321971.png','/MAGIC-SQUARE-Calculate-A-B-C/8724'))
The aim is to place the some numbers from the list (14, 15, 16, 23, 24, 25, 30, 57, 58, 69, 70, 71) 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 8cb4a + 9cab3 = 1ac9ac find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
