Numerical Palindrome

Identify a number which when multiplied by itself gives the result as 12345678987654321.

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October 26th, 2015 | Category: Mathematical |  Email This Riddle

4 guesses to Numerical Palindrome

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• Frank

  October 26, 2015 at 8:39 AM

  111111111

• Jim

  October 26, 2015 at 9:46 AM

  35136418.41117891

• Crabman

  October 26, 2015 at 10:33 AM

  Frank correctly posted the square root of your palindrome number.

• Dude

  October 30, 2015 at 5:58 AM

  Frank, you the winner!
  1 * 1 = 1. 11 * 11 = 121. 111 * 111 = 12321. 1111 * 1111 = 1234321. Following the pattern, you can come straight at: 111111111 * 111111111 = 12345678987654321