1-Write procedure length returns the number of items in a list (numitems-1'(A B (CD) E)) returns 4 (numitems-1'()) returns 0 2-Write procedure scales each number in a list by a given factor (scale-list (list 1 2 3 4 5) 10) returns_'(10 20 30 40 50) 3-Write procedure takes a procedure argument and a list as arguments, and returns a list of the results produced (new-list abs (list -10 2.5 -11.6 17)) returns '(10 2.5 11.6 17) 4-Write a procedure that returns the total number of leaves of a tree (count-leaves '((1 2) 3 4)) returns '4 5-Write a procedure that takes a list and returns only the elements of the list that are| odd (odd-elements ( 1 4 7 9 6)) returns '(1 79) Note: Must be compatible with a .rkt file. (Scheme language)