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Two persons A and B agree to meet at a place between 11 am to 12 noon. The first one to arrive waits for 20 min and then leave. If the time of their arrival be independent and at random, then the probability that A and B meet is |
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Answer» Two persons A and B agree to meet at a place between 11 am to 12 noon. The first one to arrive waits for 20 min and then leave. If the time of their arrival be independent and at random, then the probability that A and B meet is |
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