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Aleph-nought, aleph-zero, or aleph-null, the smallest infinite cardinal number. In mathematics, particularly in set theory, the aleph numbers are a sequence of numbers used to represent the cardinality (or size) of infinite sets.
Kasner used it to illustrate the difference between an unimaginably large number and infinity, and in this role it is sometimes used in teaching mathematics. To put in perspective the size of a googol, the mass of an electron, just under 10 −30 kg, can be compared to the mass of the visible universe, estimated at between 10 50 and 10 60 kg. [ 5 ]
1/52! chance of a specific shuffle Mathematics: The chances of shuffling a standard 52-card deck in any specific order is around 1.24 × 10 −68 (or exactly 1 ⁄ 52!) [4] Computing: The number 1.4 × 10 −45 is approximately equal to the smallest positive non-zero value that can be represented by a single-precision IEEE floating-point value.
Negative numbers: Real numbers that are less than zero. Because zero itself has no sign, neither the positive numbers nor the negative numbers include zero. When zero is a possibility, the following terms are often used: Non-negative numbers: Real numbers that are greater than or equal to zero. Thus a non-negative number is either zero or positive.
10 18 4: Quadrillion 10 15: 10 24 5: Quintillion 10 18: 10 30 6: Sextillion 10 21: 10 36 7: Septillion 10 24: 10 42 8: Octillion 10 27: 10 48 9: Nonillion 10 30: 10 54 10: Decillion 10 33: 10 60 11: Undecillion 10 36: 10 66 12: Duodecillion 10 39: 10 72 13: Tredecillion 10 42: 10 78 14: Quattuordecillion 10 45: 10 84 15: Quindecillion 10 48: 10 ...
10 18: 18 sextillion zetta- (Z) 1 000 000 000 000 000 000 000: 10 21: 21 septillion yotta- (Y) 1 000 000 000 000 000 000 000 000: 10 24: 24 octillion ronna- (R) 1 000 000 000 000 000 000 000 000 000: 10 27: 27 nonillion quetta- (Q) 1 000 000 000 000 000 000 000 000 000 000: 10 30: 30 In words Prefix (Symbol) Decimal Power of ten Order of magnitude
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
10 100: googol (1 followed by 100 zeros), used in mathematics; 10 googol: googolplex (1 followed by a googol of zeros) 10 googolplex: googolplexplex (1 followed by a googolplex of zeros) Combinations of numbers in most sports scores are read as in the following examples: 1–0 British English: one-nil; American English: one-nothing, one-zip, or ...