What Comes Next?

What number comes next in this sequence?
ONE, THREE, FIVE, NINE, TWELVE, TWENTY-ONE, ?

Twenty-Three

This sequence isn’t based on math or addition — it’s based on spelling.
Every number in the list ends with the letter “e”:

  • ONE

  • THREE

  • FIVE

  • NINE

  • TWELVE

  • TWENTY-ONE

The next number that fits this “ends in E” pattern is:
TWENTY-THREE

20
12