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HKIMO 2026 Grade 3 National Preliminary Set 02 Question 11

HKIMO · HKIMO 2026 Grade 3 National Preliminary Set 02

Question 11

Define $a*b=a\times b+a\times2$. Find $3*5$.
  1. 21
  2. 25
  3. 9
  4. 5