RandomReal

RandomReal[] gives a pseudorandom real number in the range 0 to 1.

RandomReal[{xmin, xmax}] gives a pseudorandom real in the specified range.

RandomReal[range, n] gives a list of n pseudorandom reals.

Examples

Random number between 0 and 1:

RandomReal[]
(* 0.472... *)

Random number in a range:

RandomReal[{10, 20}]
(* 15.3... *)

List of random numbers:

RandomReal[1, 5]
(* {0.23..., 0.87..., 0.12..., 0.56..., 0.91...} *)

Please visit the official Wolfram Language Reference for more details.