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The Most Difficult Tasks (page 2)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20. |
Find number abc
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If 5ca4a - bbc8c = 34b53 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/2026/05/02/mastermind-1777680302.png','/Find-the-right-combination/8705'))
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 6943
. Each of the numbers can be used only once.','/archive/2026/05/01/numbermania-1777593901.png','/calculate-the-number-6943/8704'))
NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
20 more of 2020 Halloween Jokes
Q: Where does Count Dracula usually eat his lunch?
A: At the casketeria.
Q: What part of the street do vampires live on?
A: The dead end.
Q: What do you get when you divide your jack-o’-lantern’s circumference by its diameter?
A: Pumpkin-pi!
Q: What can you say about a horrible mummy joke?
A: It Sphinx!
Q: What do you call a vampire that lives in a kitchen?
A: Count Spatula.
Q: What do ghosts wear when their eyesight gets blurred?
A: Spooktacles
Q: What would be the national holiday for a nation of vampires?
A: Fangs-giving!
Q: What’s a zombie’s favorite cereal?
A: Rice Creepies.
Q: Where do ghosts go on holidays?
A: The Boohamas.
Q: What did one ghost say to the other?
A: Get a life!
Q: What did the fisherman say on Halloween?
A: Trick or trout. How do ghosts search the
Q: Web?
A: They use ghoul-gle.
Q: What goes around a haunted house and never stops?
A: A fence.
Q: Who do monsters buy cookies from?
A: Ghoul scouts.
Q: Why is a cemetery a great place to write a story?
A: Because there are so many plots there!
Q: Why do Jack-o-lanterns have wicked smiles?
A: Because they just had their brains scooped out!
Q: Where is the best place to party on Halloween?
A: The g-RAVE-yard.
Q: Why did the baby wrap itself in white cloth strips?
A: It was just trying to be just like its mummy.
Q: Why do ghosts like to hang out at bars?
A: Because all of the Boos.
Q: Who won the skeleton beauty contest?
A: No body.
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/2026/04/30/magic-square-1777507544.png','/MAGIC-SQUARE-Calculate-A-B-C/8703'))
The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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 964ba - 9bc90 = 4a2a 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/2026/04/28/mastermind-1777334701.png','/Which-is-a-winning-combination-of-digits/8701'))
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 6672
. Each of the numbers can be used only once.','/archive/2026/04/27/numbermania-1777248301.png','/calculate-the-number-6672/8700'))
NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If b5b29 - 69bac = c599b 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/2026/04/25/mastermind-1777075501.png','/Find-the-right-combination/8698'))
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 789
. Each of the numbers can be used only once.','/archive/2026/04/24/numbermania-1776989101.png','/calculate-the-number-789/8697'))
NUMBERMANIA: Calculate the number 789 using numbers [5, 5, 7, 5, 14, 546] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
