95% of people can't answer, what about you?

Look at the four triangles in the picture. Use your math and reasoning skills to find the answer behind the question mark.

If you rush and lose focus, you will not be able to find the answer like most players who have failed this question. Be careful to observe each step and conquer this interesting question.

Can you solve this tricky puzzle?

Let me tell you a little secret: there is a hidden rule behind the numbers.

Now quickly register yourself in the top smartest people by leaving the answer in the comment box!

Trung Temple

Source: https://vtc.vn/95-nguoi-khong-tra-loi-duoc-con-ban-thi-sao-ar831563.html