The whole Internet is trying to find the answer to this mathematical problem, the controversy does not cease.

Mathematics is a universal assistant with which you should make friends in junior grades. If you know this subject well, then with the study of other sciences things will go much better. Mathematics develops thinking, teaches to find patterns and draw logical conclusions.



And today's edition. "Site" He offers to do a little math, having solved a couple of interesting tasks. Think like a mathematician.To solve every example with a trick. A good test for those readers who are confident in the power of their mathematical knowledge.

Think like a mathematician.

1. It is hardly necessary to start with the most difficult tasks, so we will offer a kind of warm-up. Looking at the picture below, you will see an example in which those mathematical symbols that denote arithmetic operations are omitted. And instead of a question mark, there can be addition, subtraction, division or multiplication. Can you make an example clear?
   
   
   
   
2. The second task is more complex, because here you need to deal with three question marks at once. Here, too, behind each "?" can be any of the four basic arithmetic operations. Can you do that too?
   
   
   
   
3. A lot of controversy has arisen around the decision of the last example. Internet users were divided into two camps, and supporters of each answer were sure of their rightness. Can you avoid confusion and find the solution that is the right one?
   
   
   
   

Tips and answers

1. Conscientious readers will probably immediately notice how from “22” here you can make “24” in two actions. Especially since there are numbers "19" and "21", which also differ in two. Therefore, you need to subtract “19” from “22” and then add “21” to get 24.
   
   
   
   
2. The second example is multiplication and subtraction. If you can not find the key to the solution, then look at the picture with the solution. As you can see, it was pretty simple here.
   
   
   
   
3. First you need to perform actions in brackets, and then walk from left to right. Therefore, in this case we get: 12 ÷ 2(3 + 3) = 12 ÷ 2 × 6 = 6 × 6 = 36. Although many people here perform arithmetic operations in the wrong sequence, which ultimately gives a "1."
   
   
   
   

Did you solve all the examples? Share your decisions in the comments. Also solve tricky mathematical puzzles. Or try to cope with more complex examples from the school curriculum.