Look up ?? in Wiktionary, the free dictionary.
?? (two question marks), also written as U+2047 ⁇ DOUBLE QUESTION MARK, may refer to:
- Chess annotation symbols § ?? (Blunder)
- The null coalescing operator, in some programming languages
?? (two question marks), also written as U+2047 ⁇ DOUBLE QUESTION MARK, may refer to: