You have a balance beam, the kind of scale that tips from one side to the other, depending on the weight on each side. On each side is a beaker, half-filled with water. The sides are in balance. Now, on the left side, you submerge a ping-pong ball suspended by a string. On the right side, you submerge a steel ball of the same volume as the ping-pong ball suspended from a crane.

Challenge: Does the balance beam tip to the right, to the left, or does it remain unchanged? 


Please email your solution to John Kador at using the subject line “Odd Balance.” Deadline is Sept. 1, 2013. One entrant with the correct answer (or a creative alternative) will receive a signed copy of John Kador’s How to Ace the Brainteaser Job Interview. Good luck to all.

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