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IKMC 2020 - Grades 7-8 - Self-study Question 20

IKMC · IKMC 2020 - Grades 7-8 - Self-study

Question 20

Aisha folds the five-cell paper strip numbered 1,2,3,4,5 so all cells overlap in five layers. Which top-to-bottom order is impossible?

Question illustration
  1. 3,5,4,2,1
  2. 3,4,5,1,2
  3. 3,2,1,4,5
  4. 3,1,2,4,5
  5. 3,4,2,1,5