Q: Minimize F = x′y + xy using a K-map. 2-variable map: y′ y x′ | 0 | 1 | x | 0 | 1 | Ones at (x′,y) and (x,y): vertical pair (adjacent!). Group of 2: x varies, y fixed at 1 → F = y. (K-map shows visually what algebra computed!)