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Multiplication table. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for ...
In some regions, 13 is or has been considered a lucky number. For example, prior to the First World War, 13 was considered to be a lucky number in France, even being featured on postcards and charms. [41] In more modern times, 13 is lucky in Italy except in some contexts, such as sitting at the dinner table. [42]
Arithmetic is an elementary branch of mathematics that studies numerical operations like addition, subtraction, multiplication, and division. In a wider sense, it also includes exponentiation, extraction of roots, and taking logarithms. Arithmetic systems can be distinguished based on the type of numbers they operate on.
t. e. Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a product.
Trachtenberg system. The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Russian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration camp.
The Impossible Quiz is a point-and-click quiz game that consists of 110 questions, [1][2] using "Gonna Fly Now" as its main musical theme. Notorious for its difficulty, the quiz mixes multiple-choice trick questions similar to riddles, along with various challenges and puzzles. [1][2] Despite the quiz's name and arduousness, the game is ...
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