1. perform the following binary additions 101101 + 10100  *
your answer
2. perform the following binary additions 01010011 + 01110110  *
your answer
3. compute the following 101101 - 10100  *
your answer
4. compute the following 11001011 - 1010110  *
your answer

1.         carry   1  1  1

                      1  0 1 1 0 1

                      +  1 0 1 0 0

                       ------------------------

    1  0 0 0  0 0 1  

2.         carry  1 1  1 0 1  1  

                     0 1 0 1 0 0 1 1

                  + 0 1 1  1 0  1  1 0

                  --------------------------

    0 1  1 0 0 1 0 0 1

3.                   1 0 1 1 0 1

                    -   1 0 1 0 0

                   -------------------------

        0 1 1 0 0 1

4.                      1 1 0 0 1 0 1 1

                      -    1 0 1 0 1 1 0

                     -----------------------------

          01 1 1 0 1 0 1

Explanation:

In Binary addition when you add 1 + 1 = 0, carry over the 1, i.e 10

in Subtraction when you subtract 0-1 = 1,  brow 1 from left side, resulting in -1 carried over.

b. xor is the correct answer

answer; defense;