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

[EX Q]: Problem: in a throw of dice what is the probability of ge æ « ng number greater than 3 
Options: a ) 1 / 2 , b ) 1 / 3 , c ) 1 / 5 , d ) 1 / 6 , e ) none of these
[EX A]: a

[EX Q]: Problem: a question paper has 2 parts , a & b , each containing 7 questions . if a student has to choose 5 from part a & 4 from part b , in how many ways can he choose the questions ? 
Options: a ) 1100 , b ) 1200 , c ) 1235 , d ) 1354 , e ) 735
[EX A]: e

[EX Q]: Problem: three unbiased coins are tossed , what is the probability of ge ƫ ng at least 2 tails ? 
Options: a ) 1 / 3 , b ) 1 / 6 , c ) 1 / 2 , d ) 1 / 8 , e ) none of these
[EX A]:
c