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SEAMO 2021 — Paper B — Grade 3–4 Question 4

SEAMO · SEAMO 2021 — Paper B — Grade 3–4

Question 4

Evaluate $100-99+98-97+96-95+\cdots+4-3+2-1$.
  1. $48$
  2. $49$
  3. $50$
  4. $99$
  5. $100$