What is the main challenge of the Moving Sofa Problem?
10 Puzzles That Cant Be Solved

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Social Studies, Business
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11th Grade - University
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finding the cheapest sofa
Finding the most comfortable sofa
Finding the largest sofa that can fit around a corner
Finding the lightest sofa
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Kryptos sculpture known for?
Being the largest sculpture in the world
Being made of gold
Being located in a secret location
Containing unsolved encrypted messages
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Cicada 3301 believed to be?
A recruitment tool for intelligence agencies
A new type of insect
A famous painting
A type of computer virus
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Collatz Conjecture also known as?
The Fibonacci sequence
The 3x + 1 problem
The Pythagorean theorem
The Goldbach conjecture
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the most common answer to the Wilberforce Riddle?
A whale
A bird
A fish
A tree
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was found with a World War 2 pigeon in 1984?
An encrypted message
A photograph
A medal
A map
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge of the Five Room Puzzle?
Finding the hidden treasure
Counting the number of rooms
Crossing each wall with a continuous line only once
Finding the shortest path through the rooms
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Dorabella Cipher?
A famous painting
A mathematical equation
A coded letter by Edward Elgar
A type of musical instrument
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Fenn Treasure?
A type of gemstone
A famous painting
A hidden treasure chest in the Rocky Mountains
A collection of rare books
10.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is unique about the Voynich Manuscript?
It contains the largest number of pages
It is the oldest book in the world
It is made of gold
It is written in an unknown language
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