## Discussion Forum

Que. | In a multi-user operating system, 30 requests are made to use a particular resource per hour, on an average. The probability that no requests are made in 40 minutes, when arrival pattern is a poisson distribution, is ............... |

a. | e^−15 |

b. | 1−e^−15 |

c. | 1−e^−20 |

d. | e^−20 |

Answer:e^−20 |