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

Q: Problem: in a sports club with 30 members , 17 play badminton and 17 play tennis and 2 do not play either . how many members play both badminton and tennis ? 
Options: a ) 7 , b ) 6 , c ) 9 , d ) 10 , e ) 11

A: b
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Q: Problem: if two dice are thrown together , the probability of getting prime number on both dice is 
Options: a ) 5 / 9 , b ) 1 / 9 , c ) 2 / 9 , d ) 4 / 9 , e ) 7 / 9

A: c
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Q: Problem: there are 15 slate rocks , 20 pumice rocks , and 10 granite rocks randomly distributed in a certain field . if 2 rocks are to be chosen at random and without replacement , what is the probability that both rocks will be slate rocks ? 
Options: a ) 1 / 3 , b ) 7 / 22 , c ) 1 / 9 , d ) 7 / 66 , e ) 2 / 45

A:
d
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