How are negative numbers represented in 32-bit signed integer?

Question

How are negative number represented in 32-bit signed integer? Is it two\'s or one\'s complement? or the last bit on the left is like a flag? For example: (-10)

Answer 1

0xFFFFFFFF = -1
0xFFFFFFFE = -2
0xFFFFFFFD = -3
... 

& so on