L1= {⟨M⟩| M is a TM and |L(M)| = 5 }.
we know about at least and at most case, but someone explain equal to case.
Furthermore, I'll complie more questions in same thread only.
L2= {⟨M⟩| M is a TM and M does not accept all even numbers}.
L3 = {⟨M⟩| M is a TM and M reject all even numbers}.