Thanks for a second look, I guess answers number 2 and 3 had little errors. Well, the correct thing should be, 2. 00001101 and 3. 10000101 but answers 1 and 4 remains the same. Hence, the answer is as follows:
1. 01000101
2. 00001101
3. 10000101
4. 0.
It's a brain exercising and fun participating in your logic gate. I do hope to see my questions. Waiting on you @peanutswar.