answer all of them pleaseeeee !!

3. In the following problem each bit pattern represents a value stored in two's complement notation. Perform the addition and indicate if error of overflow has occurred or not. (5 points each) 1011 b. 1011 + 1010 + 0110 a. 4. Convert the following floating-point notation to its base ten form. (5 point each) a. 11111101 b. 10101100 c. 10001100 d. 01111100 5. Encode the above base ten values in floating-point notation using 8-bit pattern. (5 points each) a. 31/16 6.54 b. e. a 1%