Letter folding - math puzzle
If you would fold a letter in two fifty times, how thick should the enveloppe be that can fit the letter? Assume that the thickness of a piece of paper is about 0.05 mm.
Explanation
1st time folding: 0.05 x 2 = 0.1 mm
2nd time folding: 0.1 x 2 = 0.2 mm
3rd time folding: 0.2 x 2 = 0.4 mm
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50st time folding: 2 to the power 50 times 0.05 mm. This is equal to 56.29 million kilometers. Compare this to he distance between the earth and the sun which is about 150 million kilometers!
2nd time folding: 0.1 x 2 = 0.2 mm
3rd time folding: 0.2 x 2 = 0.4 mm
...
50st time folding: 2 to the power 50 times 0.05 mm. This is equal to 56.29 million kilometers. Compare this to he distance between the earth and the sun which is about 150 million kilometers!
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