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HKIMO 2026 Grade 8 National Preliminary Set 05 Question 3

HKIMO · HKIMO 2026 Grade 8 National Preliminary Set 05

Question 3

Given $\overline{abcd}+\overline{badc}=17688$, find $a+b-c-d$.
  1. 9
  2. 8
  3. 7
  4. 10