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SEAMO 2018 — Paper D — Grade 7–8 Question 1

SEAMO · SEAMO 2018 — Paper D — Grade 7–8

Question 1

Find the last two digits of $1+2+3+\cdots+2017+2018$.
  1. $75$
  2. $71$
  3. $56$
  4. $63$
  5. None of the above