'Declaration
 
Public Overloads Shared Function Rnd( _
   ByVal number As Single _
) As Single

public static float Rnd( 
   float number
)

If number is less than zero, Rnd generates the same number every time, using number as the seed. If number is greater than zero, Rnd generates the next random number in the sequence. If number is equal to zero, Rnd generates the most recently generated number. If number is not supplied, Rnd generates the next random number in the sequence.