1111
1000
------
0111
0001
------
1000
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To take the 2's complement:Take the 1's complement, that is, change each 1 to 0, and each 0 to 1.Add 1 to the result.
00110011 is the 2's complement for this unsigned number and 10110011 if this is a signed number
Well, let's think about this together. To find the 3's complement of a number, we first find the 1's complement by flipping all the bits. So, the 1's complement of 123 would be 876. Then, we add 1 to the 1's complement to get the 2's complement, which is 877. Finally, we add 1 to the 2's complement to get the 3's complement, which is 878. Just remember, mistakes are just happy accidents in the world of math!
π/2 = 90 degrees so the complement of π/4 is π/4.
2% of 1000 = 1000*2/100 = 20