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GATE Mechanical 2021 Set 1 | Question: 33

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Customers arrive at a shop according to the Poisson distribution with a mean of $10$ customers/hour. The manager notes that no customer arrives tor the first $3$ minutes after the shop opens. The probability that a customer arrives within the next $3$ minutes is

  1. $0.39$
  2. $0.86$
  3. $0.50$
  4. $0.61$

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