You can invest it in Forex and make 10% in three days without any problem. But you must know Forex, otherwise you can loose
Try dice game 90% change of win....
Play with ur own risk lol
assuming OP wants the "best" way, the method with the highest +EV should be what hes looking for; the first method; forex, requires a lot fo knowledge and experience, as well as skill, which If OP had these in the first place, hed already be off trading instead of posting this. secondly, gambling dice on a 90% roll is -EV and holds a high risk of losing everything. neither of these methods comes close to even being decent.