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The Seemingly Simple ‘Math’ Problem That Stumped the Internet
By Alvin Ward
If you’re a regular Mental Floss reader, you know that we love a good brain teaser. And the one below, which originated on Facebook and has been shared more than 150,000 times, is a great one to test just how sharp you are on a Friday evening at the end of a long workweek.
It’s a seemingly simple enough task: spot the error. Your time starts now…
We’ll give you a minute …
And a little space for you to scroll down to find the answer …
Did you figure it out?
The “mistake” is that the word “mistake” is misspelled on the instruction sheet on the left. If you missed that completely, you’re not alone: the grid of numbers is what immediately grabs your attention.