In this task, you need to provide the correct option for a given problem from the provided options.

[EX Q]: Problem: there are 2 available positions and 50 candidates , one half of whom are democrats and another half are republicans . if it was decided that the positions would be filled at random , then what is the probability e that the both positions will be taken by members of just one party ? 
Options: a ) 1 / 25 , b ) 12 / 49 , c ) 1 / 4 , d ) 24 / 49 , e ) 1 / 2
[EX A]: d

[EX Q]: Problem: the compound ratio of 2 / 3 , 6 / 7 , 1 / 3 and 1 / 8 is given by ? 
Options: a ) 1 / 49 , b ) 1 / 42 , c ) 1 / 09 , d ) 1 / 77 , e ) 1 / 12
[EX A]: b

[EX Q]: Problem: how many zeros are there in 50 ! 
Options: a ) 10 , b ) 11 , c ) 12 , d ) 13 , e ) 14
[EX A]:
c