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'.

[Q]: Problem: the average of first three prime numbers greater than 5 is ?
Options: a ) 12.6 , b ) 12.9 , c ) 22.3 , d ) 10.3 , e ) 12.7
[A]: d

[Q]: Problem: john found that the average of 15 numbers is 40 . if 12 is added to each number then the mean of number is ?
Options: a ) 52 , b ) 45 , c ) 65 , d ) 78 , e ) 64
[A]: a

[Q]: Problem: how many positive integer solutions does the equation 2 x + 3 y = 100 have ?
Options: a ) 50 , b ) 33 , c ) 16 , d ) 35 , e ) 14
[A]:
c