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: two letters from the word khantkar are selected at random . what is the probability that at least one of the selected letters is a consonant ? 
Options: a ) 25 / 28 , b ) 27 / 28 , c ) 30 / 28 , d ) 40 / 28 , e ) 50 / 28

Answer: b


Question: Problem: how many positive integers less than 400 can be formed using the numbers 1 , 2 , 3 and 5 for the digits ? 
Options: a ) 48 , b ) 52 , c ) 66 , d ) 84 , e ) 68

Answer: e


Question: Problem: there are 4 red shoes & 4 green shoes . if two of red shoes are drawn what is the probability of getting red shoes 
Options: a ) 1 / 3 , b ) 1 / 14 , c ) 3 / 14 , d ) 1 / 15 , e ) 1 / 16

Answer:
c