When should you use a question mark in parentheses?

When should you use a question mark in parentheses?

The use of a question mark within parentheses is typically seen when a statement or sentence is being questioned within a larger sentence or paragraph. It indicates that the enclosed statement is being questioned or doubted. This punctuation is often used to express uncertainty or to seek clarification. For example: "He said he would be here by 5 o'clock (?), but it's already 6."