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The problem of halving primary school mathematics
Not folded in half, cut from the middle, 2 segments;

After the first folding, cut into three sections (2+1);

After the second folding, cut into 5 sections (2+1+2);

After the third folding, cut into 9 sections (2+1+2+4);

Fold it in half for the fourth time and cut it, which is17 (2+1+2+4+8);

So the answer is 17.