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Monthly Archive - October 2026 (page 2)brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20. |
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/2026/10/13/mastermind-1791849901.png','/Which-is-a-winning-combination-of-digits/8864'))
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. Calculate the number 3934
. Each of the numbers can be used only once.','/archive/2026/10/12/numbermania-1791763501.png','/calculate-the-number-3934/8863'))
NUMBERMANIA: Calculate the number 3934 using numbers [1, 6, 5, 4, 97, 592] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If 644b1 + 9c6ac = 162baa find number abc. Multiple solutions may exist. 
News photographer on plane
His request approved, the news photographer quickly used a cell phone to call the local airport to charter a flight. He was told a twin-engine plane would be waiting for him at the airport. Arriving at the airfield, he spotted a plane warming up outside a hanger. He jumped in with his bag, slammed the door shut, and shouted, ‘Let’s go’. The pilot taxied out, swung the plane into the wind and took off.
Once in the air, the photographer instructed the pilot, ‘Fly over the valley and make low passes so I can take pictures of the fires on the hillsides.’
‘Why?’ asked the pilot.
‘Because I’m a photographer for cable news,’ he responded. ‘And I need to get some close up shots.’
The pilot was strangely silent for a moment, finally he stammered, ‘So, what you’re telling me, is… you’re NOT my flight instructor?’
Found on http://www.americanflyersmorristown.net, posted on November 2009 Newsletter
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/2026/10/10/mastermind-1791590701.png','/Find-the-right-combination/8861'))
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. 
Calculate the number 443
. Each of the numbers can be used only once.','/archive/2026/10/09/numbermania-1791504302.png','/calculate-the-number-443/8860'))
NUMBERMANIA: Calculate the number 443 using numbers [2, 9, 7, 1, 22, 154] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 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/2026/10/08/magic-square-1791418017.png','/MAGIC-SQUARE-Calculate-A-B-C/8859'))
The aim is to place the some numbers from the list (9, 14, 16, 22, 26, 28, 29, 31, 34, 37, 64, 68, 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. Find number abc
)
If 37a8b - 3c563 = abc6 find number abc. Multiple solutions may exist. 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/2026/10/06/mastermind-1791245101.png','/Which-is-a-winning-combination-of-digits/8857'))
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. Calculate the number 1467
. Each of the numbers can be used only once.','/archive/2026/10/05/numbermania-1791158701.png','/calculate-the-number-1467/8856'))
NUMBERMANIA: Calculate the number 1467 using numbers [8, 6, 5, 5, 91, 959] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If 86cca - b920c = 6ca68 find number abc. Multiple solutions may exist. 
