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AMO 2023 Secondary 4 (Grade 10) Question 9

AMO · AMO 2023 Secondary 4 (Grade 10)

Question 9

A number is written as $53AB$ in base $12$. Which is its base-$11$ representation? Here the digit symbols $A$ and $B$ stand for $10$ and $11$.

Question illustration
  1. 5AA3
  2. 6A07
  3. 5909
  4. 7A05