Without using a calculator you can solve this math puzzle

If you can still find the correct answer without using a calculator, it proves your IQ is extremely high.

The following puzzle is for the problem: 9 - 3 : 1/3 + 1= ?. I bet you can find the correct answer without using a calculator.

If you find the answer in the shortest time, scroll down to the comments to record and see how many people think the same as you.

Khanh Son

Source: https://vtcnews.vn/khong-su-dung-may-tinh-do-ban-giai-duoc-cau-do-toan-hoc-nay-ar968960.html