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The Most Difficult Tasks (page 200)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1991 to 2000. |
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/2021/11/23/mastermind-1637625901.png','/Find-the-right-combination/7096'))
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 1007
. Each of the numbers can be used only once.','/archive/2021/11/05/numbermania-1636070701.png','/calculate-the-number-1007/7078'))
NUMBERMANIA: Calculate the number 1007 using numbers [1, 2, 2, 3, 69, 870] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
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If 2ac88 + aa728 = 8b4bc find number abc. Multiple solutions may exist. 
Magic Window
Two guys are sitting at a bar.
"You know why I love this bar?" asks the first one.
"No," says the second guy. "Why do you love this bar?"
The first guy points at the window, which is six stories above the ground. "It has a magic window," he says. "You jump out of that window, and you can fly."
The second guy just shakes his head. "Shut up."
"No," says the first guy. "It really is a magic window. I'll prove it to you."
So the first guy gets down from his bar stool, runs at the window, jumps out of it, and flies. He flies around the building twice, up and down, and finally comes back in. He walks to his barstool, and takes a sip of his drink. "See?" he says.
The first guy looks confused. He looks at his drink. "I must be drunk," he says.
"Still don't believe me?" asks the second guy. "I'll show you again." He gets down from his stool, runs and jumps out of the window again. This time he performs some impressive aerial acrobatics, spins, flips, dives. When he finally comes back in, the second guy is staring at him, slack-jawed.
"Wow," says the second guy. "A magic window." He gets off his barstool, takes a running jump out of the window, and promptly plummets to his death. The first guy starts laughing.
The bartender comes over to the first guy with a stern look on his face. "Superman, you're a real asshole when you're drunk."
Find number abc
)
If b8a7b + a7ab1 = 961c4 find number abc. Multiple solutions may exist. 
Calculate the number 1657
. Each of the numbers can be used only once.','/archive/2021/07/19/numbermania-1626653101.png','/calculate-the-number-1657/6969'))
NUMBERMANIA: Calculate the number 1657 using numbers [4, 2, 8, 2, 27, 843] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Calculate the number 744
. Each of the numbers can be used only once.','/archive/2021/07/12/numbermania-1626048301.png','/calculate-the-number-744/6962'))
NUMBERMANIA: Calculate the number 744 using numbers [6, 7, 3, 5, 80, 294] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Calculate the number 562
. Each of the numbers can be used only once.','/archive/2021/06/07/numbermania-1623024301.png','/calculate-the-number-562/6928'))
NUMBERMANIA: Calculate the number 562 using numbers [4, 4, 3, 8, 11, 462] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If 5bab8 + 80bbc = ca8c49 find number abc. Multiple solutions may exist. Calculate the number 705
. Each of the numbers can be used only once.','/archive/2021/05/10/numbermania-1620605101.png','/calculate-the-number-705/6900'))
NUMBERMANIA: Calculate the number 705 using numbers [3, 3, 3, 1, 66, 107] 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/2021/03/25/magic-square-1616630717.png','/MAGIC-SQUARE-Calculate-A-B-C/6854'))
The aim is to place the some numbers from the list (7, 9, 12, 13, 14, 18, 22, 24, 28, 42) 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. 
