Why Duas Are Not Answered?
It is not a point of intelligence necessarily. It could just be that Allah doesn’t want him on his current path or maybe he hasn’t learned something specific that Allah first want him to learn before He will allow him to pass. I can’t answer what he is missing, only he can do that after much thinking. Secondly, I think your friend is making an error. Does he have eyes to see? Ears to hear? A mouth to speak with? Limbs? Does he get to eat and sleep under a roof everyday? Did he pray for every one of those things? Didn’t your friend also passed many exams in the past to get the current exam he has today? Did not Allah answer his needs all those time? Then when his Lord did not answer him on time for only 4 times , he believes that his Lord does not answer him? This is not rational. He is overcome by emotions but the point of this test, this life, is not to pass a class, it is to show that you can be rational and not give in to emotion, remind him the actual test that matters, do not despair, indeed Allah will soon satisfy him if he trusts his Lord and remember all the good his Lord has done for him. He has enough reasons to trust his Lord.