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HKIMO 2026 Grade 3 National Preliminary Set 01 Question 11

HKIMO · HKIMO 2026 Grade 3 National Preliminary Set 01

Question 11

Define $a\oplus b=a\times(b+13)$. Find $3\oplus15$.
  1. 84
  2. 45
  3. 18
  4. 240