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SEAMO 2021 — Paper D — Grade 7–8 Question 11

SEAMO · SEAMO 2021 — Paper D — Grade 7–8

Question 11

Form N by concatenating integers $1001,1002,\ldots,1021$. Find the greatest power of three dividing N.
  1. $9$
  2. $27$
  3. $81$
  4. $243$
  5. None of the above