What is the rule for using 'a' or 'an' before abbreviations?

Use Of The A And An Questions



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What is the rule for using 'a' or 'an' before abbreviations?

The rule for using 'a' or 'an' before abbreviations is to use 'a' before abbreviations that are pronounced with a consonant sound and 'an' before abbreviations that are pronounced with a vowel sound.