Question

In the Scheme version of LISP, if A = (7 9 11 30) then (cdr (cdr (cdr A))) would give a
result of:
1. 7
2. 9
3. 11
4. 30

Answer 1

Do you know what (cdr ) does? It just remove the first element from the list and returns the rest of the list. So what happens when you do this tree times to A?