Answer:
155
Explanation:
Two's complement is basically switching all the numbers from 1 to 0 and from 0 to 1, and then adding 1 to the end.
2's complement of 01100101 = 10011010(switching numbers) + 1 = 10011011.
Then, you just convert this number to decimal, which can be done by adding the powers of 2:
1 0 0 1 1 0 1 1
128 + 16+8 + 2+1 = 155
Hope this helped.
