instruction:
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'.
question:
Problem: if a : b = 2 : 3 , b : c = 4 : 5 and c : d = 5 : 9 then a : d is equal to : 
Options: a ) 11 : 17 , b ) 8 : 27 , c ) 5 : 9 , d ) 2 : 9 , e ) none
answer:
b


question:
Problem: a person spends 1 / 3 rd of the money with him on clothes , 1 / 5 th of the remaining on food and 1 / 4 th of the remaining on travel . now , he is left with rs 300 . how much did he have with him in the beginning ? 
Options: a ) s 200 , b ) s 750 , c ) s 300 , d ) s 450 , e ) s 550
answer:
b


question:
Problem: if 300 ! / 10 ^ n is an integer , what is the largest possible value of n ? 
Options: a ) 75 , b ) 74 , c ) 79 , d ) 77 , e ) 72
answer:

d