ₐₙₒₙᵧₘₒᵤₛ that is not exactly what he meant, by luck he means you could have guessed questions right as well say for the quantitative test, if u guessed 10, u could ahve gotten all right compared to someone who only guessed 6 and got all 6 wrong, he never said its unpredictable the system, he said that it is complicated and contains many factors during the test put into their ranking order,