(cons 4 5)is
(4 . 5)Officially, the printed representation of
(cons 6 (cons 4 5))is
(6 . (4 . 5))except Racket simplifies this representation to:
(6 4 . 5)This is to simplify the printing. Without it,
(cons 1 (cons 2 (cons 3 (cons 4 5))))would print as:
(1 . (2 . (3 . (4 . 5))))instead of
(1 2 3 4 . 5)