(* Demonstrate the generation of random numbers. *)
a = Random[]

b=Table[ Random[], {5} ]

c = Table [ Table [ Random[], {3}], {4} ]

(* SeedRandom[] sets the seed by the time of day *)

SeedRandom[]

(* SeedRandom[ integer ] sets the seed to the given integer. *)

SeedRandom[ 1952 ]
d=Table[ Random[], {5} ]
SeedRandom[]
e=Table[ Random[], {5} ]
SeedRandom[1952]
f=Table[ Random[], {5} ]