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How to Attempt Sentence Correction- The Correct Approach

“Do it” Versus “Do so”

“If” Versus “Whether”

“Like” Versus “As”

“Comparative” Versus “Superlative” Form

“Phrase Comma Subject” and “Subject Comma Phrase”

Independent and Dependent Clauses

Types of Phrases

Infinitive vs present participle

Usage of Period and Semicolon

Usage of Pair of Commas

Oxford Comma

Usage of Comma

Usage of Colon

Dash and Pair of Dashes

All punctuations

Comma Splices and Run-ons

Comma plus present participle for cause effect relationship


Extra Information Between two Commas

Which, Who, Whose, Where

Can “Whose” be Used for Things or Objects

“Which” Versus “That”

A Rare Case when “That” is Preceded by “Comma”

“And” Versus Other Conjunctions

Comma Splices and Run-ons

Oxford Comma

Collective, Countables, Uncountable Nouns

Indefinite Pronouns are Singular

Many, Any, None, All, Some

“Either-Or” and “Neither-Nor”

An Exception in the Usage of “Each”

Avoiding Pronoun Ambiguity

Exceptions to Pronoun Ambiguity

“Who” Versus “Whom”

“Possessive Pronoun” can be used with “Possessive Noun”

A Simple Approach for 12 Different Tenses

Simple Tenses

Simple Continuous Tenses

Present Perfect Tense

Present Perfect Continuous Tense

Past Perfect Tense – Use of “Had”

Use of two “Hads” simultaneously

“Future Perfect” and “Future Perfect Continuous” Tenses

Perfect Continuous Tenses

Use of “Considered” and “Regarded As”

“Because” versus “In That”

Use of “So As To”

Use of “Modeled”

Use of “Native”

“Compared with” Versus “Compared to”

“Agree with” versus “Agree to”

Use of “Distinguish”

Use of “Being”

Where Versus When

Although, Though, Despite, and While

There Is and There Are

Between Vs Among

Usage of “Forbid”

Approach for DS Questions

1 of 5 – Common Mistakes in Data Sufficiency

2 of 5 – Common Mistakes in Data Sufficiency

3 of 5 – Common Mistakes in Data Sufficiency

4 of 5 – Common Mistakes in Data Sufficiency

5 of 5 – Common Mistakes in Data Sufficiency

Classification of Numbers

Some Exceptions on Integers

Even and Odd Integers

Finding Units Digit of a Huge Multiplication


Finding the Number of Factors

Finding the Highest Power in a Factorial

Terminating Fractions

How to Find Remainder for a Huge Product

Finding Remainder for a Large Exponent

The Most Favorite Remainder Question Type

An Important Surds and Indices Question Type

Another Important Surds and Indices Question Type

Sets – Two Elements

Sets – Three Elements

A Smart Approach to Percentage Increase and Decrease

Taking Base as 100 in Percentage Questions

Mixtures – Two Elements

Mixtures – Three or More Elements

Alligation – When and How to Use

Application of Alligation on a Question

A Key Concept on Proportion

The Concept of “Variation” or “Proportionality”

Basics of “Profit and Loss”

Basics of “Interest”




Standard Deviation

“Range” and “Variation”

Avoid Multiple Variables to Save Time

Solving a Quadratic Equation by Factorization

Inequations – Based on Modulus

Inequations – Based on Factorization

Inequations – Based on Signs

Inequations – Based on -1 to 1


Work – When we can Assume Total Work as 1

Work – When Total Work is Defined

Average Speed

Relative Speed

Angles – Lines

Angles – Triangles

Angles – Polygons

Basic Properties of Triangles

Basic Properties of Quadrilaterals

Basic Properties of Isosceles, Equilateral, and Right Triangles

Basic Properties of Circles

Basic Properties of Congruent and Similar Traingles

GMAT’s Favorite Right Triangles

An Interesting Question Type on Triangles

Another Important Question Type on Triangles

Area of Overlapping Regions I

Area of Overlapping Regions II

Difference Between Prism and Pyramid

How to Find “Curved Surface” Area of any Solid

How to Find “Total Surface” Area of any Solid

How to Find the “Volume” of any Solid

Properties of Sphere and Hemisphere

An Important Concept on Solids

The Coordinate Axis – A Primer

The Distance Between two Coordinates

Equation of a Line

Parallel and Perpendicular Lines on Coordinate Axis

Slope of a Straight Line

Equation of Circle on Coordinate Axis

Length of Perpendicular on Coordinate Axis

A Basic Approach Towards Counting the Arrangements

Difference Between “Permutations” and “Combinations”

Permutations and Combinations Formula

Applying the Permutations and Combinations Formula

Relationship Between Permutations and Combinations

An Explanatory Permutations Example

An Explanatory Combinations Example

Circular Arrangements

Repetitive Arrangements

Distributive Arrangements



What is Probability?

A Logical Probability Example

Another Logical Example on Probability

A Probability Example Based on Set Theory

An Explanatory Example on PnC Based Probability Questions

Basics of Conditional Probability

Areal Probability

Basics of Functions

Commonly Asked Functions

A Commonly Asked Functions Question Type

Another Commonly Asked Functions Question Type

Arithmetic Progression

Basics of Geometric Progression

Sum of First n…

How to Attempt Reading Comprehensions- The “Mind-Map” Approach

How to Attempt Critical Reasoning- The “Missing-Link” Approach

Choices Generally Incorrect on Critical Reasoning

Ten Main Question Types on Critical Reasoning

Characteristics of a Correct Assumption

Difference Between “Strengthening Statement” and “Assumption”

Assumption Negation Test

Characteristics of a Strengthening Statement

Characteristics of a Weakening Statement

Characteristics of an Explanation Statement

Beware When you see Numbers in CR Questions

Characteristics of an Evaluation Statement

Characteristics of an Inference Statement

Characteristics of a Conclusion Statement

Characteristics of a Para-completion Statement

Strategy for Solving Boldface Questions

Frequently Used Vocabulary in Boldface Questions

Key Points for Boldafce Questions

Vocabulary Test 1 for Boldface Questions

Vocabulary Test 2 for Boldface Questions

Vocabulary Test 3 for Boldface Questions

Vocabulary Test 4 for Boldface Questions

Vocabulary Test 5 for Boldface Questions

A Note on Dialogue Based CR Questions

Determining the method of reasoning deployed on GMAT CR

Similar Reasoning Questions on GMAT CR

Finding the Flaw in Reasoning on GMAT CR

Confusing Cause with Effect on GMAT CR

Confusing Correlation with Causation on GMAT CR

Assuming that bases are same on GMAT CR

Incorrect Analogy on GMAT CR

Generalization on GMAT CR

Circular Reasoning on GMAT CR

Impressed by numbers on GMAT CR

Missing the main point on GMAT CR

Comparing percentage with absolute numbers on GMAT CR

Comparing one with oneself on GMAT CR

Confusing necessity with sufficiency on GMAT CR

Confusing sufficiency with necessity on GMAT CR

Confusing possibility with necessity on GMAT CR

Confusing between subsets and supersets on GMAT CR

Common Errors in Awa Reasoning

An Effective Structure for AWA Argument

Sample Template for AWA Argument

Time Management for AWA

Typical Week of your Preparation

Importance of One Full Length Test per Week

GMAT Myths you Must Laugh Away

Correct Mindset for the Test

When the Real GMAT Feels Different from the Prep Done…

Utilizing the Breaks during the GMAT

When you are Stuck on a Question…

Test Taking Tips

When you run short of time on GMAT…

How to Guess an Answer Choice Better

Final Tips Before the GMAT


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