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

[EX Q]: Problem: four 6 faced dice are thrown together . the probability that all the three show the same number on them is ? 
Options: a ) 1 / 32 , b ) 1 / 216 , c ) 1 / 33 , d ) 1 / 38 , e ) 1 / 34
[EX A]: b

[EX Q]: Problem: in how many ways can 7 boys be seated in a circular order ? 
Options: a ) 110 , b ) 230 , c ) 720 , d ) 420 , e ) 680
[EX A]: c

[EX Q]: Problem: a bag contains 6 red , 2 yellow and 4 green balls . 3 balls are drawn randomly . what is the probability that the balls drawn contain balls of different colours ? 
Options: a ) 12 / 55 , b ) 3 / 5 , c ) 3 / 11 , d ) 1 / 4 , e ) 7 / 16
[EX A]:
a