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A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.
t. e. Etymology ( / ˌɛtɪˈmɒlədʒi /, ET-im-OL-ə-jee [1]) is the scientific study of the origin and evolution of a word's semantic meaning across time, including its constituent morphemes and phonemes. [2] [3] It is a subfield of historical linguistics, philology, and semiotics, and draws upon comparative semantics, morphology, pragmatics ...
829 = prime number, twin prime, part of prime quadruplet with {827, 823, 821}, sum of three consecutive primes (271 + 277 + 281), Chen prime, centered triangular number; 830s. 830 = 2 × 5 × 83, sphenic number, sum of four consecutive primes (197 + 199 + 211 + 223), nontotient, totient sum for first 52 integers
Omega ( US: / oʊˈmeɪɡə, - ˈmɛɡə, - ˈmiːɡə /, UK: / ˈoʊmɪɡə /; [1] uppercase Ω, lowercase ω; Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and last letter in the Greek alphabet. In the Greek numeric system / isopsephy ( gematria ), it has a value of 800.
The etymology of the word "Moor" is uncertain, although it can be traced back to the Phoenician term Mahurin, meaning "Westerners". From Mahurin, the ancient Greeks derive Mauro, from which Latin derives Mauri. The word "Moor" is presumably of Phoenician origin. Some sources attribute a Hebrew origin to the word.
Numerology (known before the 20th century as arithmancy) is the belief in an occult, divine or mystical relationship between a number and one or more coinciding events. It is also the study of the numerical value, via an alphanumeric system, of the letters in words and names. When numerology is applied to a person's name, it is a form of onomancy.
t. e. Lynching is an extrajudicial killing by a group. It is most often used to characterize informal public executions by a mob in order to punish an alleged transgressor, punish a convicted transgressor, or intimidate people.
This led to expressions involving the square roots of negative numbers, and eventually to the definition of a new number: a square root of −1, denoted by i, a symbol assigned by Leonhard Euler, and called the imaginary unit. The complex numbers consist of all numbers of the form + where a and b are real numbers.