The Pharaoh asked: “Who is the greatest of the gods of all time?”
Horus said: “I am not”.
Isis said: “Anubis is”.
Anubis said: “Isis is lying”.
Only one god is telling the truth, the other two are lying.
Who is the greatest?
If we assume Horus is the greatest god, this gives:
“I am not” said Horus (lie)
“Anubis is” said Isis (lie)
“Isis is lying” said Anubis (truth)
Thus, the answer: ‘Horus is the greatest god’. Easy one 🙂