Prolog Predicates

Question 1

length(X,2), append(_,X,[a,b,c,d,e]).

Answer 1

X = [d,e].

Question 2

X > 2, member(X, [1,2,3,4,5]).

Answer 2

Instantiation error

Question 3

member(X, [1,2,3,4,5]), X > 2

Answer 3

X = 3 ; X = 4 ; X = 5.

Question 4

member(X, [1,2,3,4]), member(X, [2,4]).

Answer 4

X = 2 ; X = 4.