Hi,
On some of the website I found the below breakout of the number of questions topic wise.

Quantitative: Topic wise Approx No. of questions: 37

( 5) Numbers/ Conversion/ Fractions/ Decimals/Averages/ Rounding off Numbers/ Exponents & Roots/ Prime Numbers...........
( 3) Percents/Time Speed and Distance/Ratio & Proportion/The Ratio Matrix/Calculating Interest
( 2) Allegations/Word Problems/LCM/ LCD / HCF/ HCD......
(7) Geometry/Angles/ Line/ Polygons/ Triangle/ Quadrilaterals/Area/ Perimeter/ Volume /Surface Area/ Hexagon/ Circle/Cylinder/ Cone/ Sphere/Overlapping Figures/Volume and Three-Dimensional Figures
( 3) Coordinate Geometry/Slope/Intercepts........
( 8) Algebra/Inequalities/Equations/Algebraic Expressions/ Factoring/Manipulating Complex Word Problems/Functions/Quadratic Equations
( 3) Sequence and Series/ Progressions/ Arithmetic Mean/ Geometric Mean/ Harmonic Mean/ Variance/ Standard deviation/Mean Deviation
( 2) Probability/Permutations and Combinations...........
( 2) Counting/Set Theory/Define Functions/Venn Diagram/Static.......
( 2) Graphs/Line Graphs/Circle Graphs/Bar Graphs /Cumulative Graphs.......
GMAT Verbal Topics

Sentence Correction:
Grammatical Errors vs. Stylistic Errors
Capitalizing on Answer Choice Variance
Subject/Verb Agreement
Pronoun Agreement
Pronoun Ambiguity
Idioms
Misplaced Modifiers
Parallel Construction
Verb Tenses
The Subjunctive Mood
Noun Agreement
Active Voice vs. Passive Voice
Common Errors in Diction
Proper Use of Gerunds
Comparison Words
Quantity Words
Redundancy
Critical Reasoning:
Reacting to the Stimulus
Arguments vs. Sets of Facts
Identifying Premises and Conclusions
The Six Question Types
Type One Questions
Type 1M Questions
Type Three Questions
Cause and Effect Stimuli
Type Two Questions
The 2N Negation Technique
The 2S Justification Technique
Type Four Questions
Type Five Questions
Flawed Methods of Reasoning
Three-Four Combination Questions
Type 5F Questions
Type Six Questions
Type Two-Three Combination Questions
Reading Comprehension:
Categorizing the Passages
The Pros and Cons of Outlining
Political Correctness
Business Passages
Science Passages
History/Humanities Passages

Can any one please recommend how valid it is.

Regards,
Svarmit