Final answer:
The number of books in the Bible varies by denomination: 73 in the Catholic Bible, 66 in Protestant Bibles, and more than 76 in the Eastern Orthodox Bibles.
Step-by-step explanation:
The number of books in the whole Bible varies among different Christian denominations. The Roman Catholic Bible traditionally includes 73 books: 46 books in the Old Testament and 27 in the New Testament. In comparison, Protestant Bibles typically include 66 books, with 39 in the Old Testament and 27 in the New Testament. The Eastern Orthodox Church includes a few more books in their Old Testament, bringing their total number to 76 or more, depending on the national church.
The definitive selection of books for the Western Church was set in 1442, which is considered the 'final' canonical version, including the Old Testament and New Testament.
In addition, different Christian sects may have additional texts; for example, Mormons use the Book of Mormon, and the Catholic Bible includes the Apocrypha. Until the Protestant Reformation, the primary Bible used was the Latin Vulgate, but afterward, numerous Protestant translations were produced, excluding the Apocrypha from the canon.