I have read in one of your forum posts or blog post that the frequently tested topics keep changing all the time in GMAT. May I know what are the topics to concentrate on now. 
This is what I got in my google search, does it still remain the same? 
Quant	Exponents, linear and quadratic equations, inequalities
	Fractions, percents
	General story / translation problems (that involve algebra, profits, etc.)
	Statistics (mean, median) and Sets
	Divisibility and prime, pos and neg, odd and even
	Triangles, polygons
	Algebra: the major topics (exponents, linear equations, quadratics, that kind of stuff)
	
Verbal	SC: Structure, Meaning, Modifiers, Parallelism
	CR: Find the Assumption, Strengthen, Weaken, Inference
	RC: Main Idea, Specific Detail / Lookup, Inference
							