Let X_t+1 = X_t b_t where +b_t and -b_t occur with equal probability b_t is measurable !1_t, and the outcome b_t is measurable !1_t+1 (in other words, my "bet" b_t can only depend on what has happened so far and not on the future, but my knowledge !1_t includes the outcome of all past bets). Then {X_t|!1_t} is a martingale.

The Martingale System is commonly compared to betting in a casino with the hopes of breaking even. When a gambler who uses this method experiences a loss, they immediately double the size of the next bet. By repeatedly doubling the bet when they lose, the gambler, in theory, will eventually even out with a win.

Betway  EFT\n\n With EFT, your funds will be directly credited to your bank account. EFT typically takes 1-2 business days to be processed, although they may be paid the same day, depending on your bank.

Pending withdrawals may be processed quickly but banks will have their own processing times independent of Betway. Whether or not this is your first withdrawal will also play a large part. As a rule though it should take no longer than 2 or 3 days to receive your money.