Random selection

[Carrico, Paul]

Dear all,
 
This is a strange idea (but usefull one) : I've a list a X point and I
would like to select 3 of them in a random way (of course a point can be
choose only ounce)  
 
I can use the following code 
round(X*rand(1,3))
 
neverthless :
- I've to loop until the 3 integer are different
- if X becomes small it's diffucult to have 3 different values
 
I'm sure these a simplier way to generate these 3 integers ... can I
have an advice ?
 
Thanks
 
Paul

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