Even hardcore students of the Soviet school are wrong, 97% solve the problem wrong Bashny.Net

Solving exciting problems is not only interesting, but also useful. After all, such an intellectual warm-up really involves the brain. And in the daily routine, where most things a person does simply on the machine, it is very unusual, and therefore valuable for mental health activity.

Today's edition. "Site" It will allow readers to solve some tricky problems. It is curious that each such task has a catch that you will not immediately notice. And therefore, quite attentive people here will make mistakes, trying to find too much. problem-solving. Test yourself and your abilities.



Easy solution to the problem

1. In the conditions of the first problem, it is said that a boy bought a bottle with a cork for 12 rubles. It is known that the bottle is more expensive than the cork by 10 rubles. Can you quickly calculate the cost of one cork?
   
   
   
   
2. A curious concierge wanted to count the number of steps between the 1st and 6th floors. She set to work and found that from the 1st to the 3rd floor there are 36 steps. Knowing this, she quickly figured out how many steps there were between the first and sixth floors. Can you count that?
   
   
   
   
3. Having found the answer to the previous problem, the concierge thought about a new problem. She wanted to know how many times the way up the stairs to the 6th floor is longer than the way to the 3rd floor. And again, she was able to quickly find an answer. And you?
   
   
   
   

Tips and answers

1. Many people here say that the cork costs 2 rubles. But that's the wrong answer. After all, 10 rubles is the price difference, not the cost of the bottle itself. In fact, the cost of the bottle is 11 rubles, and the cost of cork is 1 ruble.
   
   
   
   
2. Some people think that to find the answer it is enough to multiply 36 by 2. But it's a mistake. Introducing the usual entrance, you will quickly answer that there are only two flights between the first and third floors. Then 36 ÷ 2 = 18 (the number of steps in one span). And between the first and sixth floors of such spans 5. Therefore, 18 × 5 = 90 (step between the 1st and 6th floors).
3. Having solved the previous problem, you will easily find the answer here. An inexperienced person will again answer that the path to the 6th floor is 2 times longer than the path to the 3rd. However, we already know that to the third floor you need to overcome 2 spans, and to the sixth floor - five. Hence 5 ÷ 2 = 2.5. So the way up the stairs will be two and a half times longer.
   
   
   
   

Did you manage to solve all three problems? Share your results in the comments. Also look at the puzzles for adults with a catch. Or continue to solve exciting problems on a variety of topics.