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30% of the population is rich, and the other 70% is poor. Among the rich, 40% uses iPhone and60% uses Samsung Galaxy. Among the poor,

30% of the population is rich, and the other 70% is poor. Among the rich, 40% uses iPhone and60% uses Samsung Galaxy. Among the poor, 50% uses iPhone and 50% uses Samsung Galaxy. If you saw a random person on the street playing with an iPhone, how likely is he/she rich?

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