Ex-2.19

(define (cc amount coin-values)
  (cond ((= amount 0) 1)
        ((or (< amount 0) (no-more? coin-values)) 0)
        (else
         (+ (cc amount
                (except-first-denomination coin-values))
            (cc (- amount
                   (first-denomination coin-values))
                coin-values)))))
(define (first-denomination coins)
  (car coins))
(define (no-more? coin-values)
  (= (length coin-values) 0))
(define (except-first-denomination coin-values)
  (cdr coin-values)) 

Order of coin-values doesn't affect the answer produced, because in the cc we're treating coin-values as just a set of values without any assumption of its order.