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Mathematica > Random Number Generation >

RandomChoice

RandomChoice[{e₁, e₂, ...}]
gives a pseudorandom choice of one of the e_i.

RandomChoice[list, n]
gives a list of n pseudorandom choices.

RandomChoice[list, {n₁, n₂, ...}]
gives an n₁

n₂

... array of pseudorandom choices.

RandomChoice[{w₁, w₂, ...}->{e₁, e₂, ...}]
gives a pseudorandom choice weighted by the w_i.

RandomChoice[wlist->elist, n]
gives a list of n weighted choices.

RandomChoice[wlist->elist, {n₁, n₂, ...}]
gives an

array of weighted choices.

RandomChoice[{e₁, e₂, ...}] chooses with equal probability between all of the e_i.

RandomChoice gives a different sequence of pseudorandom choices whenever you run Mathematica. You can start with a particular seed using SeedRandom.

A Method option to SeedRandom can be given to specify the pseudorandom generator used.

Choose among

and

at random:

A list of 20 random choices:

array of random choices:

Choices weighted with probabilities: