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: what is the greatest value of positive integer x such that 2 ^ x is a factor of 100 ^ 50 ?
Options: a ) 70 , b ) 80 , c ) 90 , d ) 100 , e ) 120
[EX A]: d

[EX Q]: Problem: what is the dividend ? the divisor is 800 , the quotient is 594 , and the remainder is - 968 .
Options: a ) 6623 , b ) 43036 , c ) 51515 , d ) 474232 , e ) 2025
[EX A]: d

[EX Q]: Problem: if the least common addition of two prime numbers x and y is 10 , where x > y , then the value of 2 x + y is
Options: a ) 7 , b ) 9 , c ) 14 , d ) 17 , e ) 21
[EX A]:
d