Amazon Interview Question: You have a ping pong ball. It... | Glassdoor

Interview Question

Supply Chain Intern Interview

You have a ping pong ball. It is the same diameter as a

  tube that it is in. It is buried 3 feet under concrete. How do you get it out?

Interview Answer

2 Answers


Pour water in until the tube is full of water. The ping pong ball would be on the surface.

Cuong on Mar 24, 2012

Pour HOT water. Hot to reduce its diameter and water to let it float to the surface

Anonymous on Jul 14, 2015

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