60% of Japanese youth solve this very simple problem

The problem is dividing Japanese netizens in recent days. Can you do it?

We have experienced seemingly simple problems with the rules of elementary school students, but it turns out that many adults suffer.

This time too! Recently, netizens in Japan spread a very simple calculation, only for students who have not completed 5th grade. That problem:

The problem caused 60% of Japanese youth to solve mistakes.

The problem again caused intense controversy on forums in this country. In it, netizens here divided into 2 camps, one side was 9, one side was 1.

Certainly the answer is only one, so which answer is right? Knowing that according to statistics, 60% of Japanese youth in the age of 20 have misinterpreted.

But before you come to the solution, you can try setting the pen to see how much the result is. 30s start!

Answers

What is your answer? Is 9 or 1?

If you are 9, congratulations, you have reached the top 60% of the Japanese youths mentioned above.

And actually, they are wrong because of a common mistake. The logic of those who make 9 is as follows:

9 - 3: 1/3 +1 = 9 - 3: 1: 3 + 1

From there, apply according to the priority properties of mathematics: multiply first, add and subtract and calculate from left to right, we will have an answer of 9.
However, the truth is that these two operations are not the same.

Two different calculations completely.

The problem here is, when we write 3: 1, we have to make sure that 1/3 is always a group. In other words, we can rewrite the calculation as follows.

Now, according to the priority properties of mathematics, we will perform the calculation in parentheses first, then the division, then calculate the addition and subtraction from left to right.

The correct answer will be 1.