#igcsecomputerscience In this video I walk through question 3 of the paper 1 theory-based paper from May 2019. In this video I cover sign and magnitude representation (negative binary numbers). Timestamps: 7:49 - Sign and magnitude representation Link to the paper and mark scheme here: Paper 1: https://www.dropbox.com/s/k3c5jtxbl5shh9m/Paper%201%202019.pdf?dl=0