avni's puzzle time

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Across
  1. 2. fivethreetimes
  2. 4. halfhour
  3. 6. largesttwodigitnumber
  4. 10. karpekarconstant
  5. 11. startingfourcountingnumbers
Down
  1. 1. startingthreehexangonalnumbers
  2. 3. smallestthreedigitnumber
  3. 5. smallestwodigitevennumber
  4. 7. whole
  5. 8. halfcentury
  6. 9. threesides