Four friends – Sachin, Rachit, Raj, and Pintu – live on separate floors of a 4-floor building, not necessarily in the same order. The ground floor is numbered 1, the first floor 2, and so on up to the topmost floor numbered 4. Sachin does not live on an even-numbered floor. Only three friends live below the floor on which Pintu lives. Rachit lives immediately above Sachin. On which floor does Raj live?