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: if a card is drawn from a well shuffled pack of cards , the probability of drawing a spade or a king is - . 
Options: a ) 2 / 10 , b ) 4 / 13 , c ) 3 / 5 , d ) 9 / 7 , e ) 1 / 4

Answer: b


Question: Problem: a box contains 100 balls , numbered from 1 to 100 . if 3 balls are selected at random and with replacement from the box . if the 3 numbers on the balls selected contain two odd and one even . what is the probability z that the first ball picked up is odd numbered ? 
Options: a ) 0 , b ) 1 / 3 , c ) 1 / 2 , d ) 2 / 3 , e ) 1

Answer: d


Question: Problem: in a throw of a coin probability of getting a head . 
Options: a ) 1 / 3 , b ) 2 / 3 , c ) 1 / 4 , d ) 2 / 5 , e ) 1 / 2

Answer:
e