How many times can the paper be folded at most?

1. No matter what kind of paper we take out in life, we will never fold it in half more than 9 times.

2.20 1 1 year, a piece of toilet paper with a length of 13,000 feet (nearly 4 kilometers) was folded in half13 times. In order to complete the experiment, they put the toilet paper in the corridor of MIT more than 200 meters and folded it collectively for more than 4 hours. After folding 13 times, the toilet paper reached 8 192 layers. Break the Guinness World Record.

3. Suppose the paper is square, with a side length of a and a thickness of h, and it is folded once, with the same side length and a thickness of 2h; When it is folded twice, the folded side length is half of the original side length, and the thickness becomes 4h. A formula can be derived: the side length is L/(2 (0.5 * n)), and the thickness becomes 2 n * h. ..

4. According to this formula, we can get that n & gt8. 19 18 cannot be folded, because if a piece of paper with 1mm is folded 100 times, its thickness can be calculated as 2100 * 0.00/kloc.