RandomReal

RandomReal[{minmax}]
yields a pseudorandom real number in the range from min to max.
RandomReal[max]
yields a pseudorandom real number in the range from 0 to max.
RandomReal[]
yields a pseudorandom real number in the range from 0 to 1.
RandomReal[rangen]
gives a list of n pseudorandom real numbers.
RandomReal[range, {n1n2, ...}]
gives a nested list of pseudorandom real numbers.