Are numbers adjectives?
While numbers are sometimes considered adjectives because they describe nouns (e.g., “three houses”), it is more precise to refer to them as determiners.
Cardinal numbers (e.g., “one,” “two,” “three”) and ordinal numbers (e.g., “first,” “second,” and “third”) are part of a group of determiners called quantifiers, which also includes words like “any,” “several,” and “none.”