The maximum positive and negative numbers that can be represented

The maximum positive and negative numbers that can be represented in ones complement using n-bits are respectively—

1. + (2^{n – 1} – 1) and – (2^{n – 1} – 1)
2. + (2^{n – 1} – 1) and – 2^{n – 1}
3. + 2^{n – 1} and – (2^{n – 1} – 1)
4. None of these

The maximum positive and negative numbers in 1's complement form is given as + (2^{n – 1} – 1) and – (2^{n – 1} – 1)