rootsof unity(fatexpression)^2>= 0"findf(0)" or"f(1)"3Dtangentsphere"find largestintegersatisfying..."self-similarexpressionlifting theexponentprobabilityisgeometryincorrectproblemhockeystick"howmanyways..."trivial bysemi-obscureidentitylogbasevariablenew randomsymbol inproblemstatementdraw atleast 3imaginarylinescauchyschwarzcards/dice/chessproblemdifficultyout oforder"Alice andBob playa game"trivial bymodulararithmeticeulertotientfunctionam gmhm qmaverage/evproblemAlgebra orGeo problemis secretly aComboproblemcopypastedproblemanswerlessthan 10one lineAOPSsolutionat leasttwocirclesoff by factorof twobecausesilliescomplexnumbers isactually geoproblemrandom trigwhen itstotallyunnecessaryvieta'scalculusbaituglyexactform"triangleABC"jumpingoncoordinateplanebashto winburnside'slemmanot strictlyneeded"coordbashable"off by onebecauseedge casespoiler: ittelescopesmaximize/minimizealgebraicexpressionrootsof unity(fatexpression)^2>= 0"findf(0)" or"f(1)"3Dtangentsphere"find largestintegersatisfying..."self-similarexpressionlifting theexponentprobabilityisgeometryincorrectproblemhockeystick"howmanyways..."trivial bysemi-obscureidentitylogbasevariablenew randomsymbol inproblemstatementdraw atleast 3imaginarylinescauchyschwarzcards/dice/chessproblemdifficultyout oforder"Alice andBob playa game"trivial bymodulararithmeticeulertotientfunctionam gmhm qmaverage/evproblemAlgebra orGeo problemis secretly aComboproblemcopypastedproblemanswerlessthan 10one lineAOPSsolutionat leasttwocirclesoff by factorof twobecausesilliescomplexnumbers isactually geoproblemrandom trigwhen itstotallyunnecessaryvieta'scalculusbaituglyexactform"triangleABC"jumpingoncoordinateplanebashto winburnside'slemmanot strictlyneeded"coordbashable"off by onebecauseedge casespoiler: ittelescopesmaximize/minimizealgebraicexpression

Contest Problem - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. roots of unity
  2. (fat expression)^2 >= 0
  3. "find f(0)" or "f(1)"
  4. 3D tangent sphere
  5. "find largest integer satisfying..."
  6. self-similar expression
  7. lifting the exponent
  8. probability is geometry
  9. incorrect problem
  10. hockey stick
  11. "how many ways..."
  12. trivial by semi-obscure identity
  13. log base variable
  14. new random symbol in problem statement
  15. draw at least 3 imaginary lines
  16. cauchy schwarz
  17. cards/dice/chess
  18. problem difficulty out of order
  19. "Alice and Bob play a game"
  20. trivial by modular arithmetic
  21. euler totient function
  22. am gm hm qm
  23. average/ev problem
  24. Algebra or Geo problem is secretly a Combo problem
  25. copy pasted problem
  26. answer less than 10
  27. one line AOPS solution
  28. at least two circles
  29. off by factor of two because sillies
  30. complex numbers is actually geo problem
  31. random trig when its totally unnecessary
  32. vieta's
  33. calculus bait
  34. ugly exact form
  35. "triangle ABC"
  36. jumping on coordinate plane
  37. bash to win
  38. burnside's lemma not strictly needed
  39. "coord bashable"
  40. off by one because edge case
  41. spoiler: it telescopes
  42. maximize/minimize algebraic expression