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In mathematics. Fifty is the smallest number that is the sum of two non-zero square numbers in two distinct ways: 50 = 1 2 + 7 2 = 5 2 + 5 2 (the former is the sum of squares of divisors of 7 ). [ 1] It is also the sum of three squares, 50 = 3 2 + 4 2 + 5 2 (that feature in the smallest Pythagorean triple ), and the sum of four squares, 50 = 6 ...
The Hebrew language has names for common numbers that range from zero to one million. Letters of the Hebrew alphabet are used to represent numbers in a few traditional contexts, such as in calendars. In other situations, numerals from the Hindu–Arabic numeral system are used. Cardinal and ordinal numbers must agree in gender with the noun ...
A number is a mathematical object used to ... (otherwise meaning 70). ... The abstract concept of negative numbers was recognized as early as 100–50 BC in China.
Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and many other languages, they are used to coin numerous series of words. For example: simplex, duplex (communication in only 1 direction at a time, in 2 directions simultaneously) unicycle, bicycle, tricycle (vehicle with 1 wheel, 2 wheels ...
Forty-two (42) is the sixth pronic number [ 1] and the eighth abundant number, [ 2] with an abundance of 12, [ 3] equal to the average of its eight divisors as an arithmetic number. [ 4][ 5] Its prime factorization makes it the second sphenic number, and also the second of the form . [ 6] 42 is the aliquot sum of 30, [ 7] the smallest sphenic ...
The symbol # is known variously in English-speaking regions as the number sign, [1] hash, [2] or pound sign. [3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔.
A natural number can be used to express the size of a finite set; more precisely, a cardinal number is a measure for the size of a set, which is even suitable for infinite sets. The numbering of cardinals usually begins at zero, to accommodate the empty set. ∅ {\displaystyle \emptyset }
Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...