¿ ?

Punctuation mark

 * 1) Encloses a question in some languages.

Usage notes
The symbols are called, in English:
 * = inverted question mark
 * = question mark

Usage notes

 * ¿ is used at the beginning of a question, with ? at the end; however, it is not mandatory to use ¿.

Usage notes

 * In written Spanish, the ¿ symbol is placed at the beginning of an interrogative phrase, with the ? at the end of the phrase. As SMS messaging and other forms of electronic communication have become more common, many speakers only use ? for questions and ! for exclamations, leaving out the initial typographical mark. This is considered non-standard usage.

Etymology
.

Usage notes

 * In writing, the ¿ symbol is placed at the beginning of an interrogative phrase, with the ? at the end of the phrase.
 * This was common in Classical Tagalog, but fell out of use replaced by ? outside of literature.