"if you do replace the balls,..." @Elroch
"which i dont believe the op of the problem suggested." me
Elroch already covered earlier both scenarios of both replacing the balls and not replacing them.
And he was wrong about not replacing them.
Do explain. I don't recall being wrong.
pdp conceded Elroch.
His post doing so appears above.
Sometimes these posts don't appear right away.
@Elroch (#13596)
I was quoting you but addressing @punchdrunkpatzer, he seemed to be thinking of a process where the white balls were removed but the black ball replaced - couldn't understand why.
Your post was straightforwardly correct.