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VTMO 2015 — Grade 3 — semifinal Question 7

VTMO · VTMO 2015 — Grade 3 — semifinal

Question 7

Given $8\circledast5=8\times5+8+5=53$, evaluate $9\circledast3$.
  1. $36$
  2. $39$
  3. $42$
  4. $45$
  5. $48$