The Amazing of Number 9 (2nd edition)


adiputra

Previously, I wrote about The Amazing of Number 9 (1st edition), see

Okay, this time, I gonna tell you about the uniqueness of number 9. The previous post tells you a game that will always obtains answer a number 9. The special of the number 9 now is that “the total (sum) of digits of any multiplication of 9 is always 9”. If you wonder, let see these cases:

  • 9 x 1= 9, 9 is 9
  • 9 x 2 = 18, the sum of the digits is 1 + 8 = 9
  • 9 x 3 = 27, the sum of the digits is 2 + 7 = 9
  • 9 x 4 = 36, the sum of the digits is 3 + 6 = 9
  • 9 x 5 = 45, the sum of the digits is 4 + 5 = 9
  • 9 x 6 = 54, the sum of the digits…

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