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SEAMO 2027 - Paper B - SET 09 - Self-study Question 17

SEAMO · SEAMO 2027 - Paper B - SET 09 - Self-study

Question 17

Evaluate $1-2+3-4+5-6+\cdots+2023-2024+2025$.
  1. 1012
  2. 1013
  3. 1014
  4. 1015
  5. 2025