Replace the ?

What number should replace the question mark?

 

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July 28th, 2013 | Category: Brain Riddle, Mathematical |  Email This Riddle

2 guesses to Replace the ?

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• anant

  July 28, 2013 at 11:21 PM

  18

• Dude

  July 29, 2013 at 9:54 PM

  18 is correct, Anant.

  You are today’s winner.