Be aware. The requirement to "win 150,000 coins in one level’ requires you to complete the entire level. So betting 750,000 or whatever to complete the challenge with one move won’t cut it. If you are not a fan of this game, bet lower and ride it out.
Would really have been helpful if the challenge explained (rather than an obscure “Mix and match” the requirement to complete the level, not just win 150K in a level. Anyway, completed and I move on 
