Three players simultaneously toss coins. The coin tossed by A (B) [C] turns up head with probability p1 (p2) [p3]. If one person gets an outcome didi erent from those of the other two, then he is the odd man out. If there is no odd man out, the players flip again and continue to do so until they get an odd man out. What's the probability that A will be the odd man out?