random

at random

With no discernable pattern or reasoning. We will choose a raffle winner at random.
See also: random

random number

A number selected without any criteria, often by some sort of generator, such as a computer program. Don't worry, we're not choosing the winner ourselves—we'll draw a random number to determine who wins.
See also: number, random
Farlex Dictionary of Idioms.

at random

by chance; haphazard. The lottery numbers are chosen at random. As a prank, the children dialed phone numbers at random.
See also: random
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

at random

Without order or fixed purpose, haphazardly, as in Jackson Pollock dropped paints on canvas seemingly at random. Originally this phrase meant "very speedily" and "heedlessly." Shakespeare had the present usage in 1 Henry VI (5:3): "He talks at random; sure the man is mad." [Late 1500s]
See also: random
The American Heritage® Dictionary of Idioms by Christine Ammer.

at random

Without a governing design, method, or purpose; unsystematically: chose a card at random from the deck.
See also: random
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • at random
  • be picked out of a hat
  • draw for
  • draw for (something)
  • random number
  • your/somebody's number comes up
  • (one's) number comes up
  • just one of those things
  • one of those things
  • at a venture
References in periodicals archive
On the other hand, PRNG uses deterministic algorithms to generate random numbers.
Due to the requirement of random seed for PRNG, HRNG uses seed generator.
The company will pay USD 18.2m in cash for Random Lengths, of which USD 2m is deferred for up to 18 months.
An alternative approach called internal random coefficients method (IRCM) is developed in this paper.
Based on the superposition principle, the random differential equation with an input depending on several random variables is decomposed on a sequence of RDE with the same main random operator and reduced right-hand sides.
To trigger behaviour that is even vaguely random, the operating system looks for sources of external randomness -- more properly called entropy -- the statistical measure of disorder within a set of data.
A random item link provides a unique and surprising-and therefore fun--entry point into an information system.
"This experiment is a kind of reverse Turing test for random behavior, a test of strength between algorithms and humans," says study co-author Hector Zenil.
In the sequel, [L.sup.0](F, K) denotes the algebra of equivalence classes of K-valued random variables on [OMEGA] and [[bar.L].sup.0](F) the set of equivalence classes of extended real-valued random variables on [OMEGA], where two random variables are equivalent if they are equal almost everywhere (briefly, a.s.).
The new randomness extractor combines two independent sources of weakly random numbers into one set that is nearly random, with only minor deviations.
In Section 2, a newvan der Pol system with a bound random parameter and Gaussian white noise is simplified into its equivalent deterministic one.
Ciric et all [3] proved fixed point theorems for single-valued mappings, extended to a coincid ence theorems for a pair of a random operator f : X X and a multi-valued random operator T : X CB( X ) .
There are two major methods of random number generation, each with their own strengths and applications: Pseudo-Random Number Generators (PRNGs) and True Random Number Generators (TRNGs).
That method - one that is unusual nationally - was not chosen for Perry's grand jury because the visiting judge overseeing the case comes from a part of the state where random selection is preferred.
Troy, MI, September 13, 2014 --(PR.com)-- Core3 Solutions is proud to announce the launch of the world's first totally random and completely affordable sock delivery service, Random Socks.