System		Decimal		Binary		Hexadecimal		Octal
Base		10		2		16		8
		0		0		0		0
		1		1		1		1
		2		10		2		2
		3		11		3		3
		4		100		4		4
		5		101		5		5
		6		110		6		6
		7		111		7		7
		8		1000		8		10
		9		1001		9		11
		10		1010		A		12
		11		1011		B		13
		12		1100		C		14
		13		1101		D		15
		14		1110		E		16
		15		1111		F		17
		16		10000		10		20
		17		10001		11		21
		18		10010		12		22