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IMAS 2014 — Middle Primary Grades 3–4 — Round 2 Question 2

IMAS · IMAS 2014 — Middle Primary Grades 3–4 — Round 2

Question 2

If $ 6 \otimes 2 = 6 + 66 = 72 $ and $ 2 \otimes 3 = 2 + 22 + 222 = 246 $, what is the value of $ 5 \otimes 3 $?
  1. 3735
  2. 605
  3. 615
  4. 625
  5. 37035