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: 3 times the first of 3 consecutive odd integers is 3 more than twice the third . the third integer is ?
Options: a ) 15 , b ) 17 , c ) 19 , d ) 21 , e ) 26
[EX A]: a

[EX Q]: Problem: how many multiples of 2 are there between 10 and 52 , 10 and 52 inclusive ?
Options: a ) 27 , b ) 25 , c ) 24 , d ) 21 , e ) 22
[EX A]: e

[EX Q]: Problem: if the average marks of 3 batches of 55 , 60 and 45 students respectively is 40 , 62 , 58 , then the average marks of all the students is
Options: a ) 54.48 , b ) 53.31 , c ) 54.6 , d ) 54.58 , e ) none of these
[EX A]:
b