Missing Number Riddle

What number is missing from the following series:

31,  62,  93,  25,  56,  ?

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September 17th, 2015 | Category: Mathematical |  Email This Riddle

7 guesses to Missing Number Riddle

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• Frank

  September 17, 2015 at 9:03 AM

  87

• Crabman

  September 17, 2015 at 11:59 AM

  I didn’t figure it out before seeing Frank’s response, but if the digests in each number are reversed, they are multiple of 13.

  13, 26, 39, 52, 65, 78

• Dude

  September 18, 2015 at 6:51 AM

  Frank, you are today’s winner!
  87. These are multiples of 13 with reverse digits: 13, 26, 39, 52, 65, 78.

• Erin

  September 18, 2015 at 6:52 AM

  8

• jose realingo

  October 30, 2015 at 2:34 PM

  31-6=25, 62-6=56, 93-6=87 therefore the missing number is 87

• Georgette Thomas

  November 6, 2018 at 6:16 AM

  87

• Rick Levin

  November 6, 2018 at 8:52 AM

  87