I didn’t have a budget or anything so I found it mildly interesting that it turned out an even number.

  • @colourlessponyOP
    link
    74 months ago

    I was wondering the same thing. I was trying to buy exactly 10 items because that’s the max they allow at the self check out now. I’m wondering if that increase the odds greatly or something.

    • @sqibkw@lemmy.world
      link
      fedilink
      74 months ago

      Buying 10 items would definitely make this way more likely, because we have a base-10 counting system.

      To simplify the problem, if you look at the cents digit, $0.09×10 items = $0.90. If you look at both cents digits, they were mostly $0.99. $0.99×10 items = $9.90.

      All you’d need in either case there is something to cost $0.10 more to get a nice even number.

    • @wewbull@feddit.uk
      link
      fedilink
      English
      3
      edit-2
      4 months ago

      If all the prices are $x.x9 then it’s only possible if you buy a multiple of 10 items.

      • 1 item will send with a 9
      • 2 items will end with an 8
      • 3 items will end with a 7

      • 9 items will end with a 1
      • 10 items will end with a 0