0. #lang racket
1. (pair? (list 1 2 3))
2. (pair? (list 2))
3. (cons 4 3 4 5)
4. (list* 4 3 4 5)

=>

#t

#t

cons: arity mismatch;

the expected number of arguments does not match the given

number

expected: 2

given: 4

'(4 3 4 . 5)