instruction:
The task is to generate the correct answer for a given math problem.
question:
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 ?
answer:
1 billion km', 'e ) none'


question:
Problem: 2,7 , 17,3 , 11,19 , 5,13 , __
answer:
23


question:
Problem: a gambler has won 40 % of his 20 poker games for the week so far . if , all of a sudden , his luck changes and he begins winning 80 % of the time , how many more games must he play to end up winning 60 % of all his games for the week ?
answer:

20