The magic of the number 1089. Spectacular trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
Free library / Directory / Spectacular tricks and their clues

The magic of number 1089. The secret of focus

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

You simply ask to guess any three-digit number so that the difference between the extreme numbers is 1. Now ask to swap the extreme numbers. You get the second number. Offer to subtract the smaller from the larger. The person performing this trick will also have to add to this result the number that differs only in the extreme numbers: they have swapped places. The magician gives an envelope, the spectator opens it and... there is the number he got!

Focus secret:

If you do that operation, you always get 1089.

For example:

851
- 158
693
+ 396
= 1089

Using the number 1089 from the previous example, hand the volunteer a calculator and ask him to multiply 1089 by any three-digit number without saying it. (Suppose he secretly multiplied 1089? 256 = 278) Now ask how many digits are in the answer. The answer is 784.

You say, "Say five of these six numbers out loud, in any order. I'll try to figure out the missing one." Suppose a volunteer lists out loud: “Two... four... seven... eight... eight.” You politely tell him that he missed the number 7.

The secret is based on the fact that a number is a multiple of 9 if and only if the sum of its constituent digits is a multiple of 9. Since 1 + 0 + 8 + 9 = 18 is a multiple of 9, then the number 1089 is a multiple of 9. Therefore, 1089 when multiplied by any an integer will give a multiple of 9. And since the numbers spoken add up to 29, and the next multiple of 9, greater than 29, is 36, then our volunteer missed the number 7 (since 29 + 7 = 36).

We recommend interesting articles Section Spectacular tricks and their clues:

▪ Always 100

▪ Another prediction

▪ How to see the card that you let the viewer remember (two ways)

See other articles Section Spectacular tricks and their clues.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Sparrow Picker Robot 14.11.2022

Amazon has unveiled a smart picking robot set to revolutionize the warehouse workspace. The novelty uses AI to recognize objects in the warehouse, sort and process them.

Sparrow boasts computer vision that allows it to analyze products in stock. The presence of artificial intelligence ensures the performance of various manipulations with goods. One robotic mechanism can replace several people at once.

At the same time, safety precautions in places where people and robots work together are not always observed. According to experts from the Center for Investigative Journalism, in the three years preceding the coronavirus hysteria (2016-19), the injury rate at Amazon automated enterprises was 50% higher than that in workshops using exclusively human labor.

After the publication of the corresponding report, representatives of the federal Occupational Safety and Health Administration visited Amazon with a comprehensive check.

The advent of the Sparrow robot will bring the online sales giant closer to the previously announced "full automation" of the workspace and get rid of strikes and strikes by staff.

Other interesting news:

▪ Mindful sleep preparation helps you fall asleep

▪ Eco-friendly portable solar power stations from Acer

▪ The smallest microphone in the world

▪ Penicillin causes behavioral changes

▪ Jurassic crickets singing bass

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Regulators of current, voltage, power. Article selection

▪ article Shelter of the population in the protective structures of civil defense. Basics of safe life

▪ article What book did the writer ask to sell for exactly the price of a bottle of vodka? Detailed answer

▪ Article Transport Specialist. Job description

▪ article Aromatic smoking paper. Simple recipes and tips

▪ article Prediction in an envelope. Focus secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews