Grubberfly 🔮

…Wyrms pull bugs into their thrall,<br>Till ages pass and kingdoms fall,<br>Caps and shells may fall to dust,<br>But Mr. Mushroom readjusts…

here for math and (possibly) boardgames.

kindness must be reciprocated.

  • 0 Posts
  • 25 Comments
Joined 6 months ago
cake
Cake day: April 12th, 2024

help-circle


  • Grubberfly 🔮toScience MemesWitchcraft
    link
    fedilink
    English
    arrow-up
    48
    ·
    18 days ago

    tbf, the 2nd sum is exactly the first one just multiplied by 1/2. though i get that the progression is natural, even, and odd.

    the last one is definitely odd puzzling, but i cannot intuitively get the first one. how does summing the inverse of triangular number equal 2?