# GMAT Sections Prep: Quantitative Ability

The Quant section in the GMAT has a total of 37 questions. There are two main sub-sections: Data Sufficiency and Problem Solving.

**Data Sufficiency**

The Data Sufficiency questions in the GMAT are very unique to the exam. They contain mathematical questions and two statements with them. Your task is to determine whether the statements given provide sufficient data to answer the question.

**What are they testing ? **

The Data Sufficiency questions in the GMAT test your ability to analyze a problem, recognize relevant information, and decide if you have enough information to solve the problem.

**How can you prepare for them ? **

- Your preparation of DS must focus around the key word –sufficiency. Most test takers make the mistake of thinking that once they have mastered the answer choices, they can crack DS questions. Understand that DS questions are more like math puzzles.
- During your practice, instead of focusing on the answer choices, focus on the most underrated part of the problem: the question stem itself. Difficult Data Sufficiency questions are far more often solved in the question stem than in the answer choices.
- Learn to judge questions really well. If the question asks for the value of x and you cut the problem down to an equation like 305x = 2(500) – 10205, don’t waste your time solving for x! Remember, all linear one-variable equations have a unique solution, but quadratic equations—equations with an x^2 term—can have zero, one, or two solutions.
- Study prime factorization and divisibility, venn diagrams. They are frequently asked and if practised well, will save you a lot of time in the exam.

**Problem solving **

Theseare regular mathematical questions. There are 3 topics covered by the GMAT problem solving: arithmetic, algebra and geometry.

**What are they testing ?**

Problem Solving questions test your ability to solve numerical problems, interpret graphical data, and evaluate information.

**How can you prepare for them ?**

- Understand that PS questions will require you to study straighter math than DS questions.
- Master the basic concepts from geometry, algebra, statistics and arithmetic.
- You need to work a lot on fundamentals considering that the GMAT does not allow calculators. You must know the common higher powers and roots.
- Practise estimation. Often PS questions don’t measure your computation skills but your approximation skills. For example, the fact that 11 goes into 56 a little more than 5 times means that 11/56 must be slightly less than 1/5, or 0.2.
- Practise different strategies and learn to make judgment of which strategy is applicable when. This skill will be your biggest asset in quant.
- Memorize exponent rules. Know what fractional exponents and negative exponents mean. Also, be ready to answer answers about quantities with absolute values less than 1 being raised to odd and even powers.

Get as many practise questions you can in both the sections of Quant. Don’t leave it on the spur of the moment. Math requires practise and the application of knowledge.