Hey, I currently have a long term goal to be a good Engineer but Only one thing is in my way that is the "Entry Test" that Is really difficult. I am studying the same thing again and again. Done all the Hard Work But Still Couldn't Get through it.

I want to know how can I clear the test with good marks with Smart Work and with ease( I would say)
How should I make the 3 subjects maths , physics, and chemistry my bitches?