In this task, you need to provide the correct option for a given problem on probability from the provided options.
One example: Problem: in a throw of a coin find the probability of getting a tail ? 
Options: a ) 1 / 2 , b ) 1 / 3 , c ) 1 / 4 , d ) 2 / 5 , e ) 2 / 7
Solution is here: a
Explanation: "s = { h , t } e = { t } p ( e ) = 1 / 2 answer is a"

Now, solve this: Problem: there are 3 red shoes & 7 green shoes . if two of red shoes are drawn what is the probability of getting red shoes 
Options: a ) 1 / 13 , b ) 1 / 14 , c ) 1 / 12 , d ) 1 / 15 , e ) 1 / 16
Solution:
d