2.Example:

2. (4321)8 = ( ?)16

Solution: (4321)8=( )16

First convert octal to binary (4321)8=( )2

4 3 2 1 100 011 010 001

∴(4321)8=( 100011010001)2 100011010001 ̲ Now convert binary to hexadecimal (100011010001)2=( )16

1000 1101 0001 8 D 1

∴(100011010001)2=( 8D1)16

∴(4321)8=(8D1)16