Q$1.$ Demonstrate that there is no overflow possible when subtracting two negative

numbers:

$N1-N2,$ where and

Q$2.$ An addition and subtraction table is a mathematical tool used to visualize the

process of adding and subtracting numbers, often within a specific numerical

system or base. For example for base $10$ we have:

Provide an addition and subtraction table for the quaternary $($base $4)$ digits.

Q$3.$ Consider two numbers: $-1$ and $-7,$ represented in a hypothetical $4-$bit binary

computer. After adding these numbers, no overflow occurs. Determine whether the

computer uses $1\text{'}$s complement or $2\text{'}$s complement system for representing

negative numbers.

Q$4.$ Perform the addition of the following two Binary Coded Decimal $($BCD$)$ numbers:

$01110011+00110111.$

Q$5.$ Create a table with three columns representing decimal numbers, their $1\text{'}$s

complement, and their $2\text{'}$s complement in a hypothetical $5-$bit computer system.

Arrange the columns in descending order, from the largest positive number to the

smallest negative number.