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

Q: 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

A: b
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Q: Problem: in how many ways 4 boys and 4 girls can be seated in a row so that they are alternate . 
Options: a ) 144 , b ) 288 , c ) 12 , d ) 576 , e ) none

A: d
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Q: Problem: a basket contains 10 apples , of which 1 is spoiled and the rest are good . if we select 2 apples from the basket simultaneously and at random , what is the probability that the 2 apples selected will include the spoiled apple ? 
Options: a ) 2 / 9 , b ) 3 / 8 , c ) 2 / 7 , d ) 1 / 6 , e ) 1 / 5

A:
e
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