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SASMO 2021 Grade 5 Question 5

SASMO · SASMO 2021 Grade 5

Question 5

Find $8+16+24+\cdots+144+152-160+152+144+\cdots+24+16+8$.
  1. 2720
  2. 2880
  3. 3040
  4. 3200
  5. None of the above