Along the diagonal from top-right to bottom-left, the lower-right half of a square sheet is folded up over the other half. Two holes are punched inside the triangle and two right on the folded edge. How many holes does the opened sheet have?

Question

Accepted Answer

6. The two inside holes go through 2 layers: 4 holes. Each hole on the fold opens as a single hole: 2. Total 4 + 2 = 6 .

Along the diagonal from top-right to bottom-left, the lower-right half of a square sheet is folded up over the other half. Two holes are punched inside the triangle and two right on the folded edge. How many holes does the opened sheet have?

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