3. A = 100101, B = 010111 are 1's complement numbers. Perform the following operations and indicate whether overflow exists: a) A+B b) A-B c) Repeat (a) and (b) assuming that A and B are 2's complement numbers.

1. a) Consider the numbers M = 2081 and N = 2329, both in base 10. Write them in base r, as follows, and perform M - N using the (r - 1)'s complement representation subtraction algorithm for following values of r. Write and encircle the results in the places indicated below: (i) r = 2 M₂: N₂: (M-N) ₂: (ii) r = 16 M16: N16: (M-N) 16:

True or False ? a)     A(B+1)=A b)     ABA'+B+AB=A c)     AB’+AB = A

E. The postfix form of the expression; A*B+C/D is: A АB/CD+ B A *BC+/D AB*CD/+ D ABCD+/*