Oh come on ... the right question is http://www.wolframalpha.com/input/?i=ceil%28log2+%28+%28distance+to+moon%29+%2F+%28thickness+of+paper%29+%29%29 http://www

Oh come on ... the right question is http://www.wolframalpha.com/input/?i=ceil%28log2+%28+%28distance+to+moon%29+%2F+%28thickness+of+paper%29+%29%29 http://www.wolframalpha.com/input/?i=ceil%28log2+%28+%28dist... , to which the answer is of course: 42