Tasks that are difficult to solve even former excellent students

No matter how many try to escape from mathematics, but in adulthood without this science nowhere. In addition, mathematics classes develop thinking, teach to generalize and highlight the important, help to find patterns and think logically. Therefore, it is necessary to regularly decide simple math problem Not only fascinating, but also useful.

And today's edition. "Site" He will offer a couple more mathematical tasks, for the solution of which you will need not only to remember what we were taught in school in mathematics lessons, but also to show ingenuity. Hopefully you will find the most answers.



Simple math problems

1. First of all, we offer a problem about geometric shapes. Here you need to determine which number behind which figure is hiding to find a solution to the last (and most complex) example.
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   Posting from Puzzle puzzle on logic (@golovolomki_dlya_vseh)
   
   
   
   
2. Now we offer a couple of strange examples where to understand the pattern is not so easy. You will have to use savvy and think carefully to understand what number should be in place of the question mark.
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   Posting from Puzzle puzzle on logic (@golovolomki_dlya_vseh)
   
   
   
   
3. And finally, there will be a few more examples where only the first seems quite adequate. But how do you accept everyone else? Maybe there's something mixed up here? In any case, we suggest analyzing the first three examples to solve the latter.
   
   
   
   

Solving problems

1. If the sum of three circles is 45, then one circle is 15. Then from the second example it becomes clear that one square is equal to (23 – 15) / 2 = 4. In this case, behind the polygon hidden number (10 – 4) / 2 = 3. And the last example will take the following form: 3 + 4 + 4 + 15 = 26.
   
   
   
   
2. The most astute readers have probably realized that after the sign of the equation, the product and sum of numbers from the left side of the equation are consistently written. Therefore, instead of a question mark, 2110 should be written, where 21 is the product of 7 and 3, and 10 is the sum of these numbers.
3. What is the pattern in the last example? Here, the value of the previous example should be added to the sum of numbers on the left side of the example. Then really in the second example 7 + 5 = 12, and in the third 9 + 12 = 21. Therefore, in the last example, instead of the question mark, 9 + 13 + 21 = 43.
   
   
   
   

We hope that these examples did not confuse you, and the correct answer was found. If this is the case, then mathematics is fine, and the lessons where it was necessary to learn this wonderful subject, the school attended for good reason.