In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[Q]: Problem: find out the square of a number which when doubled exceeds its one fifth by 9 ? 
Options: a ) 16 , b ) 25 , c ) 19 , d ) 26 , e ) 17
[A]: b


[Q]: Problem: a drink vendor has 20 liters of maaza , 144 liters of pepsi and 368 liters of sprite . he wants to pack them in cans , so that each can contains the same number of liters of a drink , and does n ' t want to mix any two drinks in a can . what is the least number of cans required ? 
Options: a ) 135 , b ) 137 , c ) 142 , d ) 130 , e ) 133
[A]: e


[Q]: Problem: 4 years ago , paula was 4 times as old as karl . in 4 years , paula will be twice as old as karl . what is the sum of their ages now ? 
Options: a ) 22 , b ) 24 , c ) 26 , d ) 28 , e ) 30
[A]:
d