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Problem 4. lL'Iousider a gambler's ruin problem in which1 during a113,r rcrumzli the gambler can win, lose, or draw1 with probabilities p' p, and l 23), respectively [I] a: p 1:: %] Suppose the initial stakes are k for the gambler and a, I." for the opponent1 as usual. By writing down and solving an appropriate diferenoe equation, determine a formula for ah the probability that the gambler is ruin-ed. Note that your formula should involve k and o