Are You Clever Enough To Work Out This Switching Problem?

Jul 13, 2017

Here is a light switch. Note the order of the positions. If the light is now at medium and it is switched 3922 times, what will be the position of the switch?

[Correct answer revealed below - don't peek!]

Was it harder than you expected? Did you work it out? We are very impressed if you found it easy! 

PS: the answer is the off position! Wanna know how we worked it out? 

After switching 4 times, the switch will return to its original positio. So, 3922 / 4 = 980 with remainder 2. 

The switch will be at medium position after switching 3920 times, and at off position after another 2 switches. 

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