Strings on C related Questions and Answers

Question :   Which among the following option is the full set of character class Hexadecimal digits? 1. { 0 1 2 3 4 5 6 7 8 9 A B C D E F } 2. { 0 1 2 3 4 5 6 7 8 9 a b c d e f } 3. { 0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f } 4. { 0 1 2 3 4 5 6 7 8 9} Answer :   3 - { 0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f }