The task is to generate the correct answer for a given math problem.

Problem: if a 1 mm thick paper is folded so that the area is halved at every fold , then what would be the thickness of the pile after 50 folds ?
1 billion km', 'e ) none'

Problem: if z is a multiple of 8778 , what is the remainder when z ^ 2 is divided by 9 ?
0

Problem: by approximately what percent is x greater than 5 / 11 if ( 4 / 11 ) ( x ) = 1 ?

505 %