## Contents

## Question from ECE QE CS Q1 August 2000

Inquiries arrive at a recorded message device according to a Poisson process of rate 15 inquiries per minute. Find the probability that in a 1-minute period, 3 inquiries arrive during the first 10 seconds and 2 inquiries arrive during the last 15 seconds.

# Solution 1 (retrived from here)

## Solution 2

Write it here.