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AIMO 2021 Primary 3 — Preliminary (Open Trial 1) Question 6

AIMO · AIMO 2021 Primary 3 — Preliminary (Open Trial 1)

Question 6

If a∗b = a×b+a−b, find the value of (5∗3)*2.
  1. 32
  2. 30
  3. 40
  4. 49