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: the average of 13 numbers is 60 . average of the first 7 of them is 57 and that of the last 7 is 61 . find the 8 th number ?
Options: a ) 43 , b ) 30 , c ) 35 , d ) 45 , e ) 50

Answer: a

Question: Problem: a father said his son , ' ' i was as old as you are at present at the time of your birth . ' ' if the father age is 32 now , the son age 5 years back was
Options: a ) 11 , b ) 17 , c ) 11 , d ) 19 , e ) 99

Answer: a

Question: Problem: what is the total number of y integers between 100 and 200 that are divisible by 3 ?
Options: a ) 33 , b ) 32 , c ) 31 , d ) 30 , e ) 29

Answer:
a