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After a square sheet is folded along a diagonal, three holes are punched in the triangle and a fourth right on the folded diagonal. How many holes will the opened sheet have?

Competition practicePaper Folding & Punching
  • A8
  • B6
  • C7
  • D4

Step-by-Step Solution

The three inside holes go through 2 layers: 6 holes. The hole on the fold opens as a single hole: 1. Total .
Answer: C) 7

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