The logical task is to return to the school desk for a moment. Bashny.Net

Logical problems Numbers are incredibly important in school. After all, their decision clearly shows how well the child is friends with mathematics, how skillfully he uses various formulas and how well he can count. In addition, such problems can be solved only if you can think logically.

However, such a test and gymnastics for the mind is necessary not only for schoolchildren, but also for adults. And at a good age, solving various puzzles is a way to keep the brain in good shape to be ready to solve any life problems.

So today's editorial office. "Site" Again, he will offer some interesting problems that can be solved alone, with children and grandchildren. It's a good opportunity to remember school days and a strict math teacher who tried to tell and explain everything.



Logical problems Conditions of problems

1. You need to understand what numbers are hidden behind the images of ducks and cows. Only then will it be possible to solve the last example and determine what number is hiding behind the image of the carrot. When deciding, remember that it is customary to do multiplication and division first, and only then addition and subtraction.
   
   
   
   
2. According to the conditions of the second problem, it is given that one and a half proteins eat a nut and a half in 1.5 minutes. You need to find out how many nuts will be eaten by nine of the same squirrels in 9 minutes.
   
   
   
   
3. The third problem will be about Snow White from a children's fairy tale. We know that the average age of 7 dwarfs is 284 years. But if you add Snow White to this company, the average age of 8 characters will be 250.25 years. Can I find the age of Snow White? And if so, how?
   
   
   
   

Problem-solving

1. If we give our example a more "mathematical" look, then 2 + 2 = 24. It is easy to find out what = 4. In this case, behind the cow is the number 38 – 8 (two ducks) = 30. Therefore, to find out what number is hiding behind a carrot, you need to solve a simple example of 42 – 30 – 4 = 8.
2. From the conditions of the second problem, it becomes clear that one squirrel needs a minute and a half to eat one nut. So one protein in 9 minutes will eat 9 / 1.5 = 6 nuts. Therefore, 9 squirrels during this time will be able to deal with 6 * 9 = 54 nuts.
3. First we need to find the total age of the company of 7 dwarves. For this, 284 * 7 = 1988 years. Find the corresponding value for the company of 8 people (already with Snow White) 250.25 * 8 = 2002. To find the age of Snow White, you need to find the difference between 2002 and 1988 = 14 years.
   
   
   
   

We hope that solution It wasn’t extremely difficult, and the process was enjoyable and fun. If so, then it seems that math teachers have done their job well and have managed to put a lot of useful knowledge into our heads.