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

[EX Q]: Problem: what is the probability of getting a sum 9 from two throws of a dice ? 
Options: a ) 1 / 6 , b ) 1 / 8 , c ) 1 / 9 , d ) 1 / 12 , e ) none of these
[EX A]: c

[EX Q]: Problem: john borrowed 3 soccer boots from jake , and forgot them on the field , if peter came across a total of 15 boots on the field jake ' s boots inclusive , and he took 4 boots at random , what is the probability that jake ' s boots were not amongst the 4 taken ? . 
Options: a ) 12 / 91 , b ) 3 / 15 , c ) 12 / 15 , d ) 33 / 91 , e ) 3 / 91
[EX A]: d

[EX Q]: Problem: a coin is tossed 7 times . what is the probability of getting exactly 6 heads ? 
Options: a ) 7 / 32 , b ) 3 / 64 , c ) 5 / 64 , d ) 3 / 128 , e ) 7 / 128
[EX A]:
e