Exercise 3.1 (str "a" "b" "c") ;; => "abc" (vector 1 2 3) ;; => [1 2 3] (list 1 2 3) ;; => (1 2 3) (hash-map 1 2 3 1) ;; => {1 2, 3 1} (hash-set 1 2 3 1) ;; => #{1 3 2} Exercise 3.2 (defn ex2 [number] (+ number 100)) Exercise 3.3 (defn dec-maker [d] (fn [x] (- x d))) (def dec9 (dec-maker 9)) (dec9 10) ;; => 1 Exercise 3.4 (defn mapset [f col] (reduce (fn [rst x] (conj rst (f x))) #{} col)) (maps..