Find the letters to fill the blank.

T, Q, P, H, H, O, _, _, _

T, C, O, D, _

Hint 1:


  • $\begingroup$ You might want to narrow it down a bit. There are lots of possibilities. $\endgroup$ Jun 19, 2015 at 15:52
  • $\begingroup$ I'd buy that, yeah. I wasn't worried about easy, I was worried about there being too many answers that made sense. The hint ties is down almost completely. $\endgroup$ Jun 19, 2015 at 15:59

2 Answers 2


T Q P H H O _ _ _

N D H: Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Nonagon Decagon Hendecagon

T C O D _

I: Tetrahedron Cube Octahedron Dodecahedron Icosahedron

  • $\begingroup$ Quadrangle and Quadrilateral had a mighty battle and Quadrangle was winning for over 200 years but it has fallen out of favor and Quadrilateral took the only to be overtaken again in the last few years! $\endgroup$ Jun 19, 2015 at 15:55
  • $\begingroup$ The missing letter for #2 is I, for reasons similar to the first, just in a higher mode of thinking.... $\endgroup$
    – Set Big O
    Jun 19, 2015 at 15:57
  • $\begingroup$ @EngineerToast Thanks. I wasn't sure which to pick, but I've changed it now $\endgroup$ Jun 19, 2015 at 16:01
  • $\begingroup$ @Geobits Yeah, just wasn't sure what the other one was, wanted to get an answer in first $\endgroup$ Jun 19, 2015 at 16:03
  • $\begingroup$ @EngineerToast: I wonder why not "tetragon", given that five-sided figures aren't called "quintilaterals" or "quintangles"? $\endgroup$
    – supercat
    Jun 19, 2015 at 16:08

T Q P H H O _ _ _

B V N: This Question Places High Hopes On Being Very Narrow

T C O D _

W: That Concept Obviously Doesn't Work


  • $\begingroup$ I don't get it. $\endgroup$
    – JLee
    Jun 19, 2015 at 15:44
  • 1
    $\begingroup$ @JLee: That's because he's being facetious. Still got farther than I did though. $\endgroup$ Jun 19, 2015 at 15:44
  • $\begingroup$ +1 for pointing out how broad it is in the form of an answer $\endgroup$ Jun 19, 2015 at 15:51
  • $\begingroup$ Fortunately, this answer is less accurate now that a hint has been added :) $\endgroup$
    – Set Big O
    Jun 19, 2015 at 16:09

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