A simple brain teaser has sent the internet into a frenzy as it went viral on TikTok this week.
In the video, which has more than 3.5 million views, a man asked two women a seemingly simple question.
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The man begins by revealing a piece of paper which reads: “Can you spot the MISTAKE?”
Underneath, the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 are written in a rainbow of colours.
The TikTok, posted by House of Highlights, shows the women re-reading the sentence over and over again.
At first, the women wondered whether the numbers were in the wrong order, however they seemed correct.
They then suggested perhaps “mistake” had been misspelled, but it was written correctly.
“Is it something to do with the colours?” one of them asked.
“Is it something to do with the fact there’s two greens? Cause that’s red, orange, green, green?”
The women were unable to uncover the mistake.
“This is gonna kill you guys when you find out,” the man laughed.
At one point, the women were even certain there wasn’t a mistake – and that was the trick the man was playing on them.
The mistake was never revealed and the video ends with the two women becoming increasingly frustrated.
As it turns out, the mistake was the word “the” was written twice in the sentence.
Many social media users were left scratching their heads and admitted they went straight to the comments to find the answer.
“Took me longer than I’d like to admit, I’m tired,” one said.
“Had me going for a minute,” another added.
“It’s so funny how the brain automatically corrects for stuff like this! Found it but definitely took me a bit,” a third commented.