All roads lead to zero. Effective trick and its solution

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EFFECTIVE FOCUSES AND THEIR CLUES
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All roads lead to zero. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

The viewer thinks of a two-digit number, performs certain actions, and as a result, he gets zero.

Focus secret:

The viewer guesses any two-digit number. for example 45. Then he must swap the numbers, it will turn out 54. The result obtained is recorded 4 times in a row. 54545454 The viewer removes the 1st and last digit of this number 454545. The resulting number is multiplied by 3. In this case, the answer is 1363635. The resulting number is divided by 7 (it turns out 194805). We divide this number by 9 (it turns out 21645). We divide the number by 13 (it turns out 1665). We divide the resulting number by the originally conceived (45) answer 37. Please note that 37 is always obtained for any originally conceived numbers. So, to get ) you just have to subtract 37 by any options.

This trick can surprise even strong mathematicians.

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Random news from the Archive

U-shaped photoelectric sensors of the BUP series from Autonics 05.02.2016

A U-shaped photoelectric sensor is structurally a source and receiver of a light beam, built into one housing and located opposite each other. According to the principle of operation, it is a photo sensor for crossing the beam, because when an object appears between the source and the receiver, the light beam overlaps, which leads to a change in the discrete output signal (0 or 1).

The South Korean company AUTONICS is one of the leading leaders in the production of sensors for the needs of process control systems, including U-shaped photoelectric sensors of the BUP series, which are widely used in most industrialized countries of the world.

Technical features:

- working area 30 mm for BUP-30 and 50 mm for BUP-50;
- the fixed object must be of an opaque material;
- operating mode: response to dark or light;
- output: NPN or PNP open collector;
- supply voltage: 12...24 V DC;
- the presence of indicators of power and mode of operation;
- speed: 1 ms maximum;
- availability of protection against incorrect connection and short circuit;
- operating temperature range: -25...65°C;
- built-in cable.

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