0021 EXCLAMATION MARK = factorial = bang x (inverted exclamation mark - 00A1) x (latin letter retroflex click - 01C3) x (double exclamation mark - 203C) x (interrobang - 203D) x (warning sign - 26A0) x (heavy exclamation mark symbol - 2757) x (heavy exclamation mark ornament - 2762) x (medieval exclamation mark - 2E53) x (modifier letter raised exclamation mark - A71D) U+0021, character !, decimal 33, hex 0x21, octal \041, binary 00100001 UTF-8: 0x21 003F QUESTION MARK x (inverted question mark - 00BF) x (greek question mark - 037E) x (arabic question mark - 061F) x (interrobang - 203D) x (double question mark - 2047) x (black question mark ornament - 2753) x (uncertainty sign - 2BD1) x (reversed question mark - 2E2E) x (medieval question mark - 2E54) x (replacement character - FFFD) U+003F, character ?, decimal 63, hex 0x3F, octal \077, binary 00111111 UTF-8: 0x3f 00BF INVERTED QUESTION MARK = turned question mark * Spanish x (question mark - 003F) x (inverted interrobang - 2E18) x (reversed question mark - 2E2E) U+00BF, character ¿, decimal 191, hex 0xBF, octal \277, binary 10111111 UTF-8: 0xc2 0xbf 203D INTERROBANG x (exclamation mark - 0021) x (question mark - 003F) x (inverted interrobang - 2E18) x (heavy interrobang ornament - 1F679) U+203D, character ‽, decimal 8253, hex 0x203D, octal \20075, binary 10000000111101 UTF-8: 0xe2 0x80 0xbd 2E18 INVERTED INTERROBANG = gnaborretni x (interrobang - 203D) U+2E18, character ⸘, decimal 11800, hex 0x2E18, octal \27030, binary 10111000011000 UTF-8: 0xe2 0xb8 0x98 1F679 HEAVY INTERROBANG ORNAMENT x (interrobang - 203D) U+1F679, character 🙹, decimal 128633, hex 0x1F679, octal \373171, binary 11111011001111001 UTF-8: 0xf0 0x9f 0x99 0xb9 1F67A SANS-SERIF INTERROBANG ORNAMENT U+1F67A, character 🙺, decimal 128634, hex 0x1F67A, octal \373172, binary 11111011001111010 UTF-8: 0xf0 0x9f 0x99 0xba 1F67B HEAVY SANS-SERIF INTERROBANG ORNAMENT U+1F67B, character 🙻, decimal 128635, hex 0x1F67B, octal \373173, binary 11111011001111011 UTF-8: 0xf0 0x9f 0x99 0xbb