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'.

[EX Q]: Problem: if [ x ] is the greatest integer less than or equal to x , what is the value of [ - 2.6 ] + [ 1.4 ] + [ 2.7 ] ?
Options: a ) 0 , b ) 1 , c ) 2 , d ) 6 , e ) 7
[EX A]: a

[EX Q]: Problem: if x is 20 percent more than y and y is 60 percent less than z , then x is what percent of z ?
Options: a ) 500 % , b ) 48 % , c ) 500 / 3 % , d ) 125 % , e ) 60 %
[EX A]: b

[EX Q]: Problem: a mixture contains milk and water in the ratio 3 : 2 . on adding 10 liters of water , the ratio of milk to water becomes 2 : 3 . total quantity of milk & water before adding water to it ?
Options: a ) 30 , b ) 40 , c ) 20 , d ) 10 , e ) 25
[EX A]:
c