Thousands of people failed to solve the complicated math puzzle

A tricky math question popping up online has people scrambling to find the answer.

Such puzzles help sharpen your thinking skills and provide a good way to train your brain.

The complex puzzle shows a grid of numbers written each in rows and columns, where in one of them there is a question mark instead of a number, and people are asked to find out what the mystery figure is.

Did you manage to solve it? If so, you should give yourself credit as it has surprised many people who have tried to find it.

"53... I'm so proud of myself," wrote one Reddit user. "If I'm not mistaken, the first digit is the sum of the two numbers, the second is the difference," suggested another. "The first number in the middle is the sum of the two surrounding it," writes The Mirror.

If you failed to solve it, don't worry./ CNA

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