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: ( 51 + 52 + 53 + … … … + 100 ) is equal to : 
Options: a ) 2525 , b ) 2975 , c ) 3225 , d ) 3775 , e ) 3885
[EX A]: d

[EX Q]: Problem: for how many integer values of n will the value of the expression 4 n + 7 be an integer greater than 1 and less than 60 ? 
Options: a ) 10 , b ) 15 , c ) 8 , d ) 12 , e ) 20
[EX A]: b

[EX Q]: Problem: 417 x 417 + 383 x 383 = ? 
Options: a ) 320578 , b ) 80578 , c ) 80698 , d ) 81268 , e ) none of them
[EX A]:
a