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SEAMO 2027 - Paper F - SET 10 - Self-study Question 3

SEAMO · SEAMO 2027 - Paper F - SET 10 - Self-study

Question 3

How many positive integers less than 2020 have digit sum 9?
  1. 50
  2. 100
  3. 102
  4. 202
  5. None of the above