a book titled an Apple a Day, would an and a be lower case or capital?

Would an be capital or lower case

an Apple a Day

An is capitalized.

An Apple a Day

OO p OO p

what is the rule of this pattern

To determine whether the articles "an" and "a" should be capitalized in a book title like "An Apple a Day," you generally need to follow the rules of title capitalization. There are different styles and guidelines for title capitalization, but one common approach is to capitalize all major words in a title, including nouns, pronouns, verbs, adjectives, and adverbs. However, smaller words such as articles, prepositions, and conjunctions are typically not capitalized unless they are the first or last word of the title.

In the case of "An Apple a Day," since "an" and "a" are both articles and not the first or last word of the title, they would typically be lowercase, following the standard rules of title capitalization.