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The Most Difficult Tasks (page 12)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 111 to 120. |
Find number abc
)
If 8cb4a + 9cab3 = 1ac9ac find number abc. Multiple solutions may exist. 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/2026/05/19/mastermind-1779149101.png','/Find-the-right-combination/8722'))
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 8179
. Each of the numbers can be used only once.','/archive/2026/05/18/numbermania-1779062701.png','/calculate-the-number-8179/8721'))
NUMBERMANIA: Calculate the number 8179 using numbers [3, 6, 3, 7, 85, 843] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
The New Flight Atten
A pilot got on the loudspeaker shortly after takeoff and said to the passengers, "Folks, welcome aboard flight seven eighty-nine to Cleveland. We'll be flying at thirty-five-thousand feet, and expect to land in an hour and a half. Just sit back, relax, and enjoy the flight."
Forgetting to turn off the microphone, he turned to his co-pilot, yawned, and said, "Why don't you take over for a while? I'm going to take me a big healthy shit, and then I'm gonna shag the brains outta that new blonde flight attendant."
His announcement went over the whole plane. The pretty blonde flight attendant heard this and exclaimed, "Oh my God!" and started running towards the cockpit.
An old lady sitting in an aisle seat stopped her and said, "Relax honey, he's gotta take a shit first."
Find number abc
)
If abb7a + ca741 = 1a431c 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/2026/05/16/mastermind-1778889901.png','/Which-is-a-winning-combination-of-digits/8719'))
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 2222
. Each of the numbers can be used only once.','/archive/2026/05/15/numbermania-1778803502.png','/calculate-the-number-2222/8718'))
NUMBERMANIA: Calculate the number 2222 using numbers [1, 2, 4, 9, 70, 532] 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/2026/05/14/magic-square-1778717147.png','/MAGIC-SQUARE-Calculate-A-B-C/8717'))
The aim is to place the some numbers from the list (8, 12, 13, 28, 32, 33, 38, 42, 43, 52, 61) 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 4baab + 537bc = 1030a7 find number abc. Multiple solutions may exist. What a winning 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/2026/05/12/mastermind-1778544301.png','/What-a-winning-combination/8715'))
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 595
. Each of the numbers can be used only once.','/archive/2026/05/11/numbermania-1778457901.png','/calculate-the-number-595/8714'))
NUMBERMANIA: Calculate the number 595 using numbers [2, 1, 8, 7, 66, 516] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
