Mysterious nine from coins. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Mysterious nine from coins. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

A dozen (or more) coins are placed on the table in the form of a nine:

The magician stands with his back to the audience. One of those present conceives a number greater than the number of coins in the “leg” of nine, and begins to count the coins from bottom to top along the leg and, further, counterclockwise along the ring until it reaches the intended number. Then he counts again from one to the intended number, starting with the coin where he left off, but this time clockwise and only around the ring.

Under the coin on which the account ended, a small piece of paper is hidden. The demonstrator turns to the table and immediately picks up this coin.

Focus secret:

Regardless of what number was conceived, the account always ends on the same coin. First, do all this in your mind with any number to find out what kind of coin it will be. When repeating the trick, add a few coins to the leg, then the count will end in a different place.

The count ends on the coin that will be the last, if the leg of nine coin by coin is placed on the ring clockwise, starting from the coin next (clockwise) to the one to which the leg fits.

Author: M.Gardner

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Random news from the Archive

Oblivion molecule 17.11.2017

If you can't seem to forget something, it's possible that your brain simply lacks the neurotransmitter gamma-aminobutyric acid (GABA).

Researchers from Cambridge, the University of Utah and the University of Granada set up the following neuropsychological experiment: young people were asked to play a simple game - watch the color of the figures appear on the screen and press the right or left button on a special remote control, depending on the color of the figure. At first, the participants in the experiment pressed and pressed the buttons until it became a completely automatic action for them.

Then the rules changed: if a person suddenly heard a sound at the same time as the picture, he should not have pressed anything. Now it became more difficult to complete the task, and some, having heard the beep, did not have time to slow down their fingers and still pressed the button - as they had done so many times.

Some, on the contrary, managed to quickly learn the new rules, so that they reacted to the sound correctly. Obviously, here it was necessary to forget that when a figure appeared on the screen, it was necessary to press a button, and, as it turned out, those who had a lot of gamma-aminobutyric acid in their hippocampus did it the fastest. The participants in the experiment, of course, made every effort to forget about the unnecessary action, but, again, only those who had a lot of GABA in the hippocampus were good at forgetting.

Hippocampal activity was monitored using functional magnetic resonance imaging (fMRI). But it is impossible to find out about this or that substance through fMRI - tomography just shows how different brain zones work. However, the authors of the work, together with fMRI, used a variation of the nuclear magnetic resonance method, which helped to estimate the amount of GABA directly in the living human brain.

The hippocampus is considered one of the main centers of memory, and in it, like in all other brain centers, there are inhibitory neurons, the task of which is to turn off the activity of various nerve chains. Inhibitory neurons use GABA to transmit signals, so it’s understandable why some people couldn’t forget to always press the button: inhibitory neurons, due to the lack of their neurotransmitter, could not silence those neural circuits that remembered the initial conditions tasks.

For a healthy psyche, it is important not only to be able to remember, but also to be able to forget. The restructuring of memory is necessary for learning - we already wrote once that in order to remember something, you need to forget something. Moreover, it is believed that many mental disorders, up to schizophrenia, are associated, among other things, with the fact that the brain remembers too much.

From unnecessary information, obsessive thoughts appear, which can cause constant anxiety, depression, hallucinations, etc.; in fact, studies of the brains of patients with schizophrenia have shown that during their lifetime they had problems with the inhibitory neurons in the hippocampus. And the idea of a drug that would act on such neurons, helping us to forget, in the light of new results, looks not only relevant, but also quite real.

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