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 the remainder is 15 when the integer n is divided by 28 , what is the remainder when 2 n is divided by 14 ?
Options: a ) 0 , b ) 1 , c ) 2 , d ) 3 , e ) 4
[EX A]: c

[EX Q]: Problem: ages of two sisters differ by 9 years . if 5 years ago , the elder one was twice as old the younger one , find their present age
Options: a ) 1228 , b ) 1423 , c ) 1632 , d ) 1834 , e ) 1932
[EX A]: b

[EX Q]: Problem: the maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student get the same number of pens and same number of pencils ?
Options: a ) 87 , b ) 91 , c ) 100 , d ) 96 , e ) 101
[EX A]:
b