D C

1. the second bit is a 1 instead of a 0
2. add -32 in decimal
3. ?
4. 9
5. AAAAAABBBBBBBBB
6. ABA*95*a5AAAB
7. Light Gray
8. Dark Gray
9. Greenish Blue
10. Bluish Green
11. Medium Yellow
12. ?

1. D
2. 100 0100
3. 44
4. 68
5. ?
6. -68

1. C
2. 100 0011
3. 67
4. 43
5. ?
6. -67

1. 10001001000011
3. 2243
4. 21103
5. 8771
6. 110001001000011