English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.
"forty-fifth." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/forty-fifth>.
forty-fifth. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/forty-fifth
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.