Given: E$8$B$4$D$7$F$616$ is a hexadecimal number. Answer the following questions about it:

What is the Isb $($ex: $"0","1","$B$","$CA$")$

What is the msb $($ex: $"0","1","B","CA")$

What is the LSB $($ex: $"0","1","$B$","$CA$")$

What is the MSB $($ex: $"0","1","$B$","$CA$"$

This is a $-$bit number $($ex: $"8","6","128")$