1.Example:

1. (567)8 = ( ?)16

Solution: (567)8=( )16

First convert octal to binary (567)8=( )2 ̲ 5 6 7 101 110 111

∴(567)8=(1011101112 101110111

Now convert binary to hexadecimal (101110111)2=( )16

0001 0111 0111 1 7 7

∴(101110111)2=( 177)16

∴(567)8=(177)16