Curated Video
Maths Puzzles Part 5
In our fifth puzzle video we provide four maths puzzles with solutions. Perfect for a maths lesson starter.
Physics Girl
Bowl Riddle Solution (Plus 2 BONUS riddles) ft. Kurt Hugo Schneider part 2/3
See if you can solve the next two riddles in this video: (1) the silent round riddle (2) the broom riddle ft. Kurt Hugo Schneider!
Physics Girl
Can you solve the $20 riddle? ft SMBC Comics' Zach Weinersmith
I sit down with Zach Weinersmith from SMBC comics to ask him some physics trivia and logic riddles!
Physics Girl
Can you solve the BOWL RIDDLE? ft. Kurt Hugo Schneider Part 1/3
Answer to the bowl riddle
AllTime 10s
10 Puzzles That Cant Be Solved
Have an IQ of 160+? Fancy yourself as the next Albert Einstein? Well good for you, but you probably still won't be able to solve these puzzles!
Physics Girl
Why do mirrors flip horizontally (but not vertically)?
Why do mirrors appear to flip images horizontally but not vertically?
Let's Tute
The Math Illusion: Where Did the Missing Rupee Go?
The video explains a common math illusion using a story about borrowing money to buy a comic book. It highlights the importance of separating different types of transactions when doing addition and emphasizes the fun and trickiness of...
TED-Ed
Can You Solve the Secret Sauce Riddle?
The search is on for the Pasta Palace's top chef and his recipe for a fabulous secret sauce. Viewers are challenged to figure out the hiding place of the secret recipe before agents of the Burger Bazaar and the Sausage Saloon. A...
TED-Ed
Can You Solve the Multiverse Rescue Mission Riddle?
Alas! A team of 11 researchers has been beamed to separate dimensions. The viewers' challenge, if they choose to accept it, is to figure out how to use an experimental teleportation robot to get them home safely.
TED-Ed
Can You Solve the Dark Matter Fuel Riddle?
Space captains must figure out how to reach an abandoned alien space station before any other species in the galaxy. The problem? Where to store caches of fuel along the way. Viewers needn't be aliens to figure out this riddle.
Khan Academy
Khan Academy: Brain Teasers: Liar Truthteller Brain Teaser
Video explains how to solve a brain teaser involving two doors, with treasure behind one of the doors. Two people guard the doors. The first is honest and always tells the truth. The second lies and never tells the truth. What question,...
Khan Academy
Khan Academy: Brain Teasers: Forehead Numbers Brain Teaser
Video sets up and solves the following brain teaser: Three people with infallible logic are in a room together. Each has a number painted on their forehead. The numbers are unique, greater than zero, and one number is the sum of the...
Khan Academy
Khan Academy: Brain Teasers: Alien Abduction Brain Teaser
Video explains how to solve a brain teaser involving ten people who have been abducted by aliens. The people are arranged single-file, facing the same direction. Each person is wearing either a purple or green hat. No one can see the...
Khan Academy
Khan Academy: Brain Teasers: Toggler Brain Teaser
Video explaining how to solve a brain teaser involving five people. Four of the people are togglers--they alternate between lying and telling the truth--and the fifth person always tells the truth. The goal of the teaser is to figure out...
Khan Academy
Khan Academy: Brain Teasers: Blue Forehead Room
Video explains the following brain teaser: One-hundred perfect logicians are blindfolded and each has their forehead painted blue. They all enter a room with the lights off, sit in a circle, and the lights are turned on. Each logician...
Khan Academy
Khan Academy: Brain Teasers: Light Bulb Switching Brain Teaser
Video explains how to solve the following brain teaser: One hundred light bulbs are arranged in a row. Each light bulb can be either on or off. On the first pass of the row, each bulb is switched on. On the second pass, every other bulb...
Khan Academy
Khan Academy: Brain Teasers: 3 D Path Counting Brain Teaser
Video explains how to solve the following brain teaser: Starting in the upper left rear block of a 3x3 cube, how many different ways are there to get to the bottom right front block of the cube, with movement restricted to moving to the...
Khan Academy
Khan Academy: Brain Teasers: Blue Forehead Room Solution
Video explains the solution to the following brain teaser: One-hundred perfect logicians are blindfolded and each has their forehead painted blue. They all enter a room with the lights off, sit in a circle, and the lights are turned on....
Khan Academy
Khan Academy: Brain Teasers: Path Counting Brain Teaser
Video explains how to solve the following brain teaser: Starting in the upper left hand corner of a 6x6 grid, how many different ways are there to get to the bottom right corner of the grid, with movement restricted to moving to the...
Khan Academy
Khan Academy: Brain Teasers: Forehead Numbers Brain Teaser
The perfect logicians are at it again.