In this task, you need to provide the correct option for a given problem on probability from the provided options.
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Question: Problem: there are 10 books on a shelf , of which 4 are paperbacks and 6 are hardbacks . how many possible selections of 5 books from the shelf contain at least one paperback and at least one hardback ? 
Options: a ) 75 , b ) 120 , c ) 210 , d ) 246 , e ) 252

Answer: d


Question: Problem: from a pack of 52 cards , 1 card is drawn at random . find the probability of a face card drawn . 
Options: a ) 4 / 13 , b ) 1 / 52 , c ) 1 / 4 , d ) 1 / 3 , e ) none of these

Answer: a


Question: Problem: what is the probability of getting a number less than 4 when a die is rolled ? 
Options: a ) 5 / 5 , b ) 1 / 2 , c ) 5 / 1 , d ) 5 / 7 , e ) 5 / 2

Answer:
b