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Which of the following is correct?

a k-objective optimization problem

an k-objective optimization problem

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    Use a before consonant sounds and an before vowel sounds. K begins with the consonant /k/ (it's pronounced /keɪ/), so you say a.
    – user230
    Mar 15, 2014 at 2:03

1 Answer 1

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"a k-objective optimization problem" is correct because you use a before a word that starts with a consonant. "An" is seen in front of words that begin with a vowel, unless there is some time of exception to the rule.

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