Mathematical examples for adults, which can master only a select few

Of the huge list of school disciplines, mathematics can definitely be called one of the most important. The ability to count tolerably is definitely useful in life, and not only in financial matters. Not surprisingly, adultism is of great interest.

So today's editorial office. "Site" It will provide a couple of fascinating examples, which will be able to solve only the most attentive readers, as well as those who well remember school math lessons.



Mathematics for adults Conditions of problems

1. Although the first example seems simple, since it consists of only one and one zero, many even manage to make a mistake. Try to calculate how much you will get.
   
   
   
   
2. Next, we offer the task already for ingenuity. Suppose you have an unlimited supply of water and 2 buckets of 3 and 5 liters. How do you measure 4 liters of water?
3. Now we offer numbers that are arranged in the following order: 8, 2, 9, 0, 1, 5, 7, 3, 4, 6. What is the pattern of the numbers in this order? And although we are talking about arithmetic signs, but here knowledge of mathematics is almost not useful.
4. And finally, we offer a problem where you will need to calculate the crew of a pirate ship. It is known that on board there are several sailors, cats, a cook and a one-legged captain. The crew had 16 heads and 43 legs. How many cats and sailors are on the ship?
   
   
   
   

Answers to challenges

1. If you get 12, this is the most popular answer. But you can't call it right. Because the answer is 30. And to get it, you need to correctly perceive the conditions in the picture. To do this, let’s rewrite the example in one line: 1 + 1 + 1 + 1 + 11 + 1 + 1 + 11 + 1 * 0 + 1 = 30.
   
   
   
   
2. First, you need to fill a 5-liter bucket, from which a 3-liter bucket is already filled. Then empty the smaller bucket. In the larger bucket will remain exactly 2 liters of water, which should be poured into an empty 3-liter. Then you need to fill the 5-liter bucket with water again, and from it add the remaining liter of water to a smaller bucket so that it is full. After these manipulations in a larger bucket will be exactly 4 liters of water.
   
   
   
   
   
   
3. The numbers are arranged alphabetically by their name (eight, two, nine...). And although this problem seems quite simple, it is still curious that in the same English version, a number of digits will look completely different.
4. Excluding the one-legged captain and coke, there are 40 legs per 14 inhabitants. If all 14 inhabitants were sailors, the legs would be 14*2=28. So the difference between 40 and 28 = 12 is half the legs of all the cats on the ship. So all the tails on the ship are 12*2/4=6. Then the sailors are 14-6 = 8. If you count your legs, everything fits together. Nice work!
   
   
   
   

We hope that solution That was interesting to you. Do not be lazy to write your opinion on this, and also tell us whether it was possible to cope with all the tasks.