# Morning Socks Routine

Published / by Viktor

Martha has to put on socks before leaving her house in the morning. She has a drawer in her bedroom which contains $$N$$ different pairs of socks. Martha starts pulling socks from the drawer one by one, and a soon as she gets a matching pair, she stops and departs for work. Find the expected value $$\mathbb{E}\left( X \right)$$ of the number of socks she has to pull every day from her drawer before she can leave her house.