Railway carriage

Published March 19, 2017

Railway carriage

Transport of goods by rail is carried out by different types of railway carriages. Depending on the nature of the cargo, the body structure, way of loading and unloading, as well as ensure the safety of goods are distinguished: covered railway carriages, open railway carriages, platforms, tanks, railway carriages of the bunker type...

Division

Published March 19, 2017

Division

There are rules to quickly determine whether a number is divided by a predetermined divisor without a remainder. The most prominent signs of divisibility for 2, 3, 4, 5, 8, 9, 11, 25 and their derivatives, also exists divisibility for 7, 13, 1001 and other numbers. Division can be an interesting one focus...

The golden ratio

Published March 19, 2017

The golden ratio

The golden ratio ancient and medieval mathematics was called "divine proportion". Golden Section is currently descended from Olympian heights in ordinary textbooks. However, in addition, that the golden ratio is known from textbooks, something else can be said about it...

The number 119

Published March 19, 2017

The number 119

The number 119 when divided by 2 gives a remainder of 1; when divided by 3 yields a remainder of 2 when divided by 4 gives a remainder of 3 when divided by 5 yields a remainder of 4 when dividing by 6 gives a remainder 5; when divided by 7 is divisible without a remainder...

Even number

Published March 19, 2017

Even number

No seeing the number is difficult to guess what it is - an even number or odd. But do not think that you will always be able to say it, almost see the defined number. Parity in number theory - characteristics of a number that determines its ability to divide evenly into two. Say, for example, 16 - odd or even number?..

Approximate numbers

Published March 19, 2017

Approximate numbers

Who does not know what is the approximate number that is likely to be interesting at least briefly acquainted with them, the more that knowledge of simple techniques to work with approximate numbers is practically useful. The exact solution of certain mathematical problems can not be obtained by classical methods, or the decision may be obtained in a very complex form...

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