How to Solve a Riddle That Saves the City From Dr. Schrödinger’s Planned Army of Giant Cats
In "Can you solve the giant cat army riddle?" by animated by math teacher and TED-Ed educator Daniel Finkel and animated by Artrake Studio, narrator Addison Anderson poses a clever riddle to solve. It all starts with a crazed Dr. Schridinger who wants an army of supersized felines to terrorize the city and a team of agents now trapped in what was thought to be his lab. In order to escape, the code 2, 10 and 14 has to be entered into the computer, but there are only three keys available to use +7, +5 and ? and a risk of blowing up everyone in the room.
All you have to do is enter those numbers and you'll be free. But there's a problem. The control panel has only three buttons: one which adds 5 to the display number, one which adds 7, and one which takes the square root. You need to make the display output the numbers 2, 10, and 14, in that order.It's okay if it outputs different numbers in between, but there's no way to reset the display, so once you get to 2, you'll have to continue on to 10 and 14 from there. "there are other traps built into the panel. If it ever shows the same number more than once, a number greater than 60, or a non-whole number, the room will explode.
My third @TED_ED puzzle is out!
Do you have what it takes to stop Dr. Schrodinger from building an army of giant cats? https://t.co/5Xfo5zeDdm
- Daniel Finkel (@MathforLove) June 11, 2018
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