2.26¶

; Suppose we define x and y to be two lists: 
; (define x (list 1 2 3))
; (define y (list 4 5 6))
; What result is printed by the interpreter in response to evaluating each of 
; the following expressions:
; (append x y)
; (cons x y)
; (list x y)

(define x (list 1 2 3))
(define y (list 4 5 6))

(append x y) ; (1 2 3 4 5 6)
(cons x y) ; ((1 2 3) 4 5 6)
(list x y) ; ((1 2 3) (4 5 6))