Re: Putting it on red
It's better than that. Putting it all on red in small-ish batches gives close to 100% return of clean money, because each winning bet returns the stake plus the same in winnings. The only losses are when the ball lands in 0 or 00 (for those houses that like a little extra), so either 1/37 or 2/38.
Mind you, I've always wondered about this. Why not just wander into the casino, change the cash into chips, have a couple of drinks, then change the chips back into cash? Same effect, zero loss.