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Interview Question

Analyst, Search Marketing Interview Charlottesville, VA

How many ping pong balls can fit in a 10x10x10 foot room?

Answer

Interview Answer

2 Answers

0

This is going to have to be approximate.

What we want to do here is first find the volume of the room, then the volume of a ping pong ball, and divide to find the number of balls that will fit in the room.

Anonymous on Nov 11, 2013
1

The trick here is not to go the route of computing volumes since the ping pong ball is a sphere. This means that there will be space left over due to the shape.

1 ping pong ball diameter: 1.5 inches
1.5in/1 ball=10ft*12inches/x balls
x = 80 balls

This means if you have a 1.5 inch height and 120 inch width, you could line 80 balls in a row.

So the answer is 80 balls ^ 3 (1 for each dimension) = 512,000 balls

Sumedh on Jun 9, 2015

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