Figure out the next number

What is the missing number?

4 5 6 7 8 9

61 52 63 94 46 ?

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December 5th, 2009 | Category: Mathematical |  Email This Riddle

2 guesses to Figure out the next number

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• Paul

  December 10, 2009 at 11:36 PM

  18 – each of the two bottom numbers are reversed and corresponse to their square root (the top number). Square root of 16 is 4; 25 is 5; 36 is 6; …81 is 9.

• Dude

  December 11, 2009 at 4:45 AM

  18 is correct.

  You are today’s winner!

  Nicely played, Paul.