6. Perform addition on the following sets of binary numbers. (a) 1011010+00101 (b) 00111000 11110000 (c) 1010101001010101 Perform addition on the following numbers using 2's complement signed numbers Indicate if an overflow occurs. 8. Perform subtraction on the following numbers by adding the 2's complement of the subtrahend. Indicate if an overflow occurs. (a) 11010 10100 (b) 10110-01101 (c) 11100-10101 (d) 11010 - 11001