Just send me five unique numbers of 1-78 when you want to take an exam. What kind of divination is this? Is it accurate?

Do you believe these things yourself or have someone test them? In fact, such a thing is just a belief. If you believe it, you don't believe it. There is no final invalid result. No one can say that it must be wrong, nor does it mean that it is 100% accurate when you happen to be right, and it will depend on it in the future. You still have to work hard on your own, and your destiny is in your own hands, not others. If everyone can predict, what else do you need?