Calculate 4 numbers to get 10

It is a simple application that displays only four numbers from 1 to 9 at random

It is a simple application that displays only four numbers from 1 to 9 at random.

Let's add, subtract, multiply and divide these four numbers to 10.

Of course in mental arithmetic.

Think of it as training to create a soft head.

For now, the answer example is displayed.

However, there is not always one correct answer.

For example, the numbers 2,4,5,8

(5 - 4) * 2 + 8 = 10

(8 - 4 - 2) * 5 = 10

In this way, there can be multiple formulas.

Please consider many ways.