Engineers have been left stumped trying to answer a maths problem posed by drawing just one line.
TikTok user Karingendi shared a clip where three of her work colleagues were challenged to solve the riddle, which has racked up more than 39 million views.
For the challenge, she wrote down the number 100 stacked on top of another 100 saying that if they manage to solve it she’ll “give them whatever they want”.
The engineers were given three minutes to solve this brain teaser. They thought about it carefully, looking at the paper from many angles, and even tried different angles.
One even accused the woman of writing the question wrong. The women were not able to solve the sum by using one line, and they demanded more time.
This video has received more than 17,000 views. Thousands of people were stumped and worryingly, many failed to understand the concept of using only one line.
One engineer found the solution she needed by simply removing all mathematical logic.
He simply ran a line through the first to make it a 1. The problem now reads Too 100.
Some people were relieved to finally have an answer to the problem, as one person commented to say: “He got it. You could see the light bulb go pff.”
And the penny dropped for another viewer, who wrote: “OHHH YOU PUT A LINE OVER THE 1ST ONE TO MAKE IT ‘TOO 100’.”
But not everyone was satisfied with the answer, as a third argued: “Making the top 1 into a T makes ‘too 1 hundred’ not ‘too hundred’ there’s no correct answer, it’s BS.”
And someone else joked: “She’s not replying because she knew she did it wrong.”