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SASMO 2022 Grade 6 Question 9

SASMO · SASMO 2022 Grade 6

Question 9

What is the sum of the digits of $2007\times\underbrace{111\ldots111}_{12\text{ ones}}$?
  1. 108
  2. 99
  3. 90
  4. 81
  5. None of the above