Thirty: meaning, definitions and examples

Same as 'thirty' (the first instance), used for clarity, especially in textual representation.

• She bought thirty apples from the market.
• The project will take approximately thirty days to complete.

Use in formal writing, documents, or when precision in numerals is needed.

• The meeting is scheduled to start at 30 minutes past noon.
• There are 30 students in the classroom.

Use in Roman numerals, often seen in historical contexts, monuments, or formal documents. It can also have a negative connotation related to adult content, so use with caution.

• The monument was erected in the year XXX.
• Beware using 'XXX' as it often refers to explicit content.

Similar to 'thirty', denotes the exact number but also can be a shorthand conversational form.

• There are thirty students in the class.
• Can you lend me thirty dollars?

Used when talking about the range of ages from 30 to 39 or a period of time in the 20th century (1930s).

• People often say life begins at 30s.
• The 1930s were a challenging decade for the world economy.