01 July 2022

Something Silly I Noticed

Every three digit number of repeating digits is divisible by three.

111/3 = 37

222/3 = 74

333/3 = 111

444/3 = 148

555/3 = 185

666/3 = 222

777/3 = 259

888/3 = 296

and

999/3 = 333.

This is right up there with noticing that 45+78 = 123 back when I was a kid.

Posted by Angus McThag at 11:34
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3 comments:

  1. Technomad01 July, 2022 12:25

    So "222" is one-third of the Beast? That explains that stupid show!

    ReplyDelete
  2. Anonymous01 July, 2022 21:10

    If you add all the digit in any whole number and this sum is divisible by three then the number is divisible by three. EV 135 sum is 9, 135/3 = 45.

    ReplyDelete
    Replies
    1. Anonymous05 July, 2022 01:11

      Corollary—If the sum of the digits is divisible by 9, then the number is divisible by nine.

      Delete

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