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IKMC 2012 - Grades 7-8 - Self-study Question 6

IKMC · IKMC 2012 - Grades 7-8 - Self-study

Question 6

In which expression can every occurrence of 8 be replaced by the same positive number other than 8 without changing the result?
  1. $(8+8)\div8+8$
  2. $8(8+8)\div8$
  3. $8+8-8+8$
  4. $(8+8-8)8$
  5. $(8+8-8)\div8$