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A square sheet is folded along one diagonal and then along the other, leaving a small triangle. Two holes are punched in it. How many holes are there when it is unfolded?

Competition practicePaper Folding & Punching
  • A8
  • B4
  • C6
  • D16

Step-by-Step Solution

Each diagonal fold doubles the layers: 4 layers in the small triangle. Each punch makes 4 holes: .
Answer: A) 8

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