Rnd([Num])
Return a random number greater than or equal to zero and less than one.
NOTE: This function does not return properly randomized numbers unless Randomize is called first with a suitable seed. To avoid this problem and generate random numbers with ease, use RndEx, RndInt or RndFloat.
Parameter 
Description 
See table below. 
Num 
Description 
<0 
Return the same number every time, using Num as the seed. 
>0 
Return the next random number in the sequence. 
0 
Return the most recently generated number. 
omitted 
Return the next random number in the sequence.

Randomize, RndEx, RndInt, RndFloat
Sub Main
Debug.Print Rnd() ' 0.??????????????
End Sub