Agree, adults are damn self—confident creatures. And if you, like all normal parents, sometimes boil over because for some reason your child cannot understand what is obvious to you, like two and two, then here is the opposite case. Here is an ordinary problem for schoolchildren, which 9 out of 10 will solve without any problems. Well, shall we crack our brains?
Imagine that you are participating in a TV show, and there are three doors in front of you. Behind one of them is a brand—new car, behind the other two - nothing, well, or a goat. The presenter, who knows where the prize is, suggests that you first choose (but not open) any door, then opens one of the two remaining ones, behind which there is definitely emptiness, and suggests changing your initial choice. What will you do? According to most people, including mathematicians, the answer is counterintuitive, but probability theory works flawlessly. Now let's explain why.
We often like to scold school problems, they say, the conditions in them are sometimes so absurd and absurd that it is completely confusing. And instead of starting to make a decision after reading the conditions, we spend time criticizing. Popular mechanics has picked up for you a bearded problem from basic mathematics, in which everything is in order with the condition. Even for high school humanities students, it takes a few minutes to solve it, and how long will it take you?
This year, the most popular and best-selling toy in the world has an anniversary. The invention of the Hungarian architect appeared on the shelves of toy stores back in 1980 and since then has been exciting the minds of young and old, from housewives to professors. Erne Rubik's cube is assembled at speed by people and robots, supercomputers are looking for the fastest way to assemble, and mathematicians are trying to unravel all the secrets hidden inside a seemingly simple toy. That's because even though the inner parts of the cube are made of plastic, its real guts are the real numbers.
In 2019, Vasim Dauadi, a bachelor of the Federal Polytechnic School of Lausanne (Switzerland), managed to solve a puzzle that scientists have been trying to solve for 100 years.
For 65 years, mathematicians around the world have been trying to solve a kind of puzzle and find three numbers whose sum in a cube would be 42. And it seems they finally succeeded.
Everyone is individual: fish, lizards and spiders. If it moves, it most likely has a character, says Spencer Ingli of the University of North Carolina.