Matching Pairs Number systemsOnline version Numbering systems by Elena Rojo 1 11 in decimal 2 15 in decimal 3 15 in octal 4 Byte 5 31 in decimal 6 25 in decimal 7 12 in decimal 8 1 Gb 9 1A in hexadecimal 1100 in binary 1111 in binary 001101 in binary 1F 31 in octal 8 bits 0001 1010 in binary B in hexadecimal 1024 MB