GMAT Sentence correction General Strategies

GMAT Sentence Correction General StrategiesGMAT Sentence correction(SC) comprises 15 of the total 41 verbal questions, which means that the majority of verbal questions are from GMAT SC. With SC questions, you will be presented with a question followed by five answer choices. The question will be underlined in part. You have to select the best answer choice that rephrases the underlined part of the question. Remember - the first answer choice will repeat the original text so don't bother to read it again.

Here is a step by step action plan to solve GMAT SC Questions

1. Read the whole sentence slowly and carefully. We all have different reading speeds, but as a good rule of thumb, you’ll want to read the sentence significantly slower than you would read a novel. For you fast readers who don’t subvocalize as you read, you might want to try subvocalizing SC sentences; sometimes it’s best to hear the mistake rather than see it.

2. If you notice what looks like an error in the underlined portion, try to identify the type of error before you move...

GMAT Parallelism - How to Make Your Lists and Comparisons Parallel

GMAT ParallelismIt’s important to make sure that whenever you compare two things, those things are similar enough to make a comparison appropriate.  For example, if you and a friend are both preparing for the GMAT, but your friend has the luxury of studying full-time while you have a job and a family competing for your attention, it’s not appropriate to compare your score improvements with those of your friend.  Doing so would be an example of what is idiomatically called “comparing apples to oranges.”

The same thing is true on GMAT Sentence Correction questions.  When items are being compared, they must be “apples to apples,” or parallel.  For instance, take a look at the following example of a comparison:

Unlike most business students at her school, who attended classes full time, Carla’s schedule was so full that she could only attend part-time.

The sentence as written compares “most business students” to “Carla’s schedule.”  Schedules are things, and business students are people; this is an apples-to-oranges comparison.  In order to correct it, we should put the items being compared into parallel form, like this:

How to identify Style or Tone in GMAT Reading Comprehension

GMAT Reading Comprehension Tone and StyleOne question type you are bound to encounter on the GMAT Reading Comprehension is a style or tone question. Style and tone questions are particularly rare because most of the passages will be informational articles with neutral tones. For example, it would not be very challenging if you were asked to identify the tone of a passage about the many types of metamorphic rock - such a passage would surely be neutral.   

The tone of any given passage is the author’s emotion or feeling, usually towards his subject. An author’s style is the particular way he uses language to reflect his unique authorial voice. Most style or tone questions will include the words “attitude,” “tone,” “style,” “feeling,” etc. A typical question of this type might look like this:

•  The author’s attitude toward global warming might best be described as which of the following?

•  Which of the following best describes the tone of the passage?

•  Based on the statements in lines 43-46, which of the...

How to study for the GMAT in one month?

Categories : GMAT Study Plan

Ideally you should spend 3 months for your GMAT Prep(Read How to prepare for the GMAT in 3 months?). If you have one month, here is a focused way to plan your studies:

Week 1: Diagnosis and Practice

Take a practice test and carefully go over your wrong answers. Look for patterns. You want to see if there is one particular section or problem type that is hurting you more than all others. Do additional practice problems if the practice test yields inconclusive information. Read explanations for wrong answers and map out three to five consistent weaknesses. You will focus on these in the next week.

Week 2: Focused Study

Now is the time to deal with your weaknesses. Depending on how many you identified, you will want to spend 1 – 2 days focusing on each. If strengthening arguments questions are your Kryptonite, put a night or two of studying into that. If data sufficiency algebra is killing you, spend an afternoon reading strategies and explanations related to it. You should spend this week doing a combination of practice problems and content coursework about math and English. Take super-concise notes that you can review later.

The goal during this period is...

(GMAT 800) If n and a are positive integers, what is the units digit

If n and a are positive integers, what is the units digit of n^(4a+2) – n^(8a)?

(1) n = 3
(2) a is odd

A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked;
B)    Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked;
C)    BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient;
D)    EACH statement ALONE is sufficient to answer the question asked;
E)    Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data are needed.

BONUS QUESTION: What actually is the units digit (assuming the answer is not E)?


One important thing to note about exponents is that, by definition, they indicate “repetitive multiplication” – the multiplication of the same number over and over again.  Accordingly, they lend themselves nicely to patterns, as when you perform the  same action over and over again you’ll tend to get similar results.  When you consider statement 1, that n = 3, look at how 3 multiplies to different exponents:...

(GMAT 800)The function g(x) is defined for integers x such that if x

The function g(x) is defined for integers x such that if x is even, g(x) = x/2 and if x is odd, g(x) = x + 5.  Given that g(g(g(g(g(x))))) = 19, how many possible values for x would satisfy this equation?

A. 1
B. 5
C. 7
D. 8
E. 11


The easiest way to approach this problem is probably to work backwards, at least until we see a pattern.

With g(...) = 19, then we can consider which operation applied to (...).  If it was x/2, then (...)= 38.  38 is even so that is fair.   If it was x + 5, then (...) was 14.  14 is even, so that operation would not have been applied.

On paper, you could make a tree, with 19 as the root, and 38 as the first node.  

Next consider 38.  38 could have come from 76/2 or 33 + 5.  Two possibilities give us two nodes branching from 38:

19  -> 38 -> 76, 33.

We can now observe the pattern that with an odd number, it must have come from an even, but an even could come from either of two numbers.

Therefore our 76 will branch into 2 numbers, and the 33 into just one.

33 -> 66
76 -> 73, 152..

We can represent this as shown here:


How to identify modifying Phrases In GMAT Sentence Correction

Modifying PhraseA common trick used by GMAT test makers is to insert modifying phrase incorrectly. Here are some sentences that incorrectly use modifying phrases:

Sentence A: Ever since her paw was crushed in the front door, Mrs. Benson has been worried about Muffin, her pet cat.

Sentence A starts off with the modifying phrase “Ever since her paw was crushed in the front door,” and then talks about Mrs. Benson and her worry for her cat.  But Mrs. Benson sounds like a person, and as a person, she probably doesn’t have a paw to be crushed.  It’s MUCH more likely that Muffin’s paw got crushed, causing Mrs. Benson’s worry.  This sentence needs to be corrected to put the modifying phrase next to the item it modifies. 

Here are a couple of ways that we can do that, depending on where the sentence’s underlining is placed:

Sentence A1: Ever since her paw was crushed in the front door, Mrs. Benson has been worried about Muffin, her pet cat.

If the modifying phrase isn’t underlined, we don’t have the opportunity to fix it-- but we can rearrange the rest of the sentence so that the thing that is modified (...

How to handle nerves on GMAT test day?

Categories : GMAT Exam Day Tips

Handling Nerves on GMAT Test DayTest day is no different than any other GMAT prep days. You have to be focused, prepared and give your best shot. But we are not robots, we are humans. So it is natural to feel a little bit anxious. But if you feel: cold sweats, night terrors, the shakes, and so on, then you are showing signs of acute anxiety. Knowing what to expect in the testing center will help you relieve some of the unnecessary anxiety. Here is Knewton's minute by minute breakdown of what to expect in the test center.

1. Arrive early, but don’t plan on studying at the testing center. 30 minutes before liftoff

Show up to the test center 30 minutes before the official time, as the GMAC suggests. Although this may mean waking up even earlier than expected, avoiding any feeling of being rushed is priceless. However, many testing centers don’t allow studying in the waiting room, so don’t plan on getting there early and reviewing notes. Use the time before the test to relax and focus on the task at hand.

2. Locker Room. 10 minutes before liftoff

After presenting your identification and test reservation, you may be given...

GMAT Simple Interest and Compound Interest

Compound and Simple Interest GMATSimple interest and compound interest - essential topics for an MBA. GMAC thinks the same too. So you will find these questions randomly distributed in your GMAT Exam.

Simple interest is the most basic and is a function of P, the principle amount of money invested, the interest rate earned on the principle, i, and the amount of time the money is invested, t (this is usually stated in periods, such as years or months).

The resulting equation is:

Interest = iPt

In basic terms, the above equation tells us the amount of interest that would be earned on a principle amount invested (P), for a given time (t) at a given interest rate (i).

If you invested $1,000 (P = your principle) for one year (t = one year) at 6% simple interest (i = given interest rate), you would get $60 in interest at the end of the year and would have a total of $1,060.

For compound interest, you would earn slightly more. Let’s look at similar type problem, though this one involves compound interest.

How to solve GMAT Subject Verb Agreement Questions(Video)

Video Summary

1) First GMAT Subject Verb Agreement Practice Question
Expert instructors Jen Rugani and Dave Ingber explain how to solve the first tricky GMAT Subject Verb Agreement Questions

Techniques used

  • Process of Elimination
  • Spotting Error
  • Read the answer choice one final time

GMAT Solid Geometry - Rectangular Solids and Cylinders

Rectangular Solid

Learn the concepts behind volume and surface area before you start solving GMAT Solid geometry problems. All solid geometry problems come down to this - length, breadth and height. For data sufficiency questions, look out for values of l, b and h. if any of them are missing then it would be easy to eliminate answer choices.

GMAT Rectangle

6 rectangular faces constitute a rectangular solid
The formulas you need to remember for a rectangular solid are

Volume = Length (l) x Width (w) x Height (h)

Surface Area = (2 x Length x Width) + (2 x Length x Height) + (2 x Width x Height)

"If length = width = height, that means that the rectangular solid is, in fact, a cube."


Vertex: Wow! quite a confusing word? Not really

Vertex = Corner

a) Vertex is the number of corners in a...

5 Reasons why you should Take the GMAT During or Right After College

Categories : GMAT Preparation

In case you didn't knew, your GMAT Score is valid for five years. Not many MBA Aspirants think about this. But it is always better to take the GMAT just after or while you are still in a college.

1. Time

Sure, you’re busy now — but chances are you’ll be even busier once you’re out in the real world working 40-60+ hours a week. With that kind of schedule, it will be difficult to section off time to study for the GMAT. Also, beginning your prep now — when you know that you’ll still have ample time to retake the exam should it not go too smoothly — will allow you take the pressure off yourself on test day.

2. Study zone

It may take some practice to master complex Data Sufficiency problems and dense Reading Comprehension passages. Since you are already digesting complex information and working under pressure to complete academic tasks in college, it shouldn’t be too hard to add a little GMAT preparation to your daily studying regime. That way, it feels like just an extra class, rather than an unfamiliar burden.

3.Math and Verbal Skills

We hear this constantly: after several years away from day-to-day practice, it may be hard to work with formulas or remember your grammar fundamentals. Given that you had to take that last...

GMAT Statistics Fundamentals - Mean, Mode, Range, Median and Standard Deviation

GMAT StatisticsEven if you fear statistics by its reputation, it is one of the easiest sections in the GMAT because a standard set of questions is asked and anyone who understands the fundamentals that I shall describe will be able to ace the questions. The three most basic topics in stats are mean, mode, and median. Usually, the GMAT will go one step further into range and standard deviation.

Mean: Mean is the average. Let’s say there are two numbers: 6 and 8. The mean would be:
(6+8)/2 =14/2 =7. If you analyze the number 7, it makes sense that it is average of 6 and 8. Using the same approach, the mean of n numbers a1,a2,a3…….an would be (a1+a2+a3…..+an)/n. If you remember this formula, you should be able to do well with mean questions. We shall discuss some of the standard questions in subsequent blogs, but for right now, remember the key formula and start doing some mean and average questions from Grockit games.

Mode: Let’s say that you are given a set of numbers, such as {4,3,7,9,9,11,10}. In order to find the mode, you have to arrange the numbers in ascending...

How to solve GMAT Critical Reasoning Inference question

GMAT Critical Reasoning InferenceYou’re having lunch with your friend Jane, and you suggest getting hot fudge sundaes for dessert; Jane tells you that she doesn’t eat hot fudge sundaes.  In real life, you could draw several valid inferences from this: she’s lactose intolerant, she has sensitive teeth and so can’t eat frozen desserts, she’s on a diet and trying to avoid sweets, or maybe she just doesn’t like ice cream or hot fudge. 

In real life, those would all be acceptable inferences, because the real-world definition of infer is to do any of the following:

1. to derive by reasoning; conclude or judge from premises or evidence: e.g., They inferred his anger from his heated denial.
2. (of facts, circumstances, statements, etc.) to indicate or involve as a conclusion; lead to.
3. to guess; speculate; surmise.
4. to hint; imply; suggest.

“Infer” is, as you can see, a word with fairly flexible meaning.  We most often use it in day-to-day life to mean “make an educated guess.”  If your friend Jane says she doesn’t eat hot fudge sundaes, you apply your existing knowledge about the possible reasons someone could have for...

How to solve work and rates problem in GMAT

Work Rate ProblemsCarefully go through the following question types. These are the standard work rate problems that you would encounter in your GMAT Exam.

Working Together

In questions where individuals work at different speeds, we typically need to add their separate rates together. Make sure you keep your units straight. This doesn’t mean wasting time and writing each and every one out, but rather simply recognizing their existence. Note that when working together, the total time to complete the same task will be less than BOTH of the individual rates, but not necessarily in proportion. Nor, are you averaging or adding the given times taken. You must add rates.

Q) A worker can load 1 full truck in 6 hours. A second worker can load the same truck in 7 hours. If both workers load one truck simultaneously while maintaining their constant rates, approximately how long, in hours, will it take them to fill 1 truck?

A. 0.15
B. 0.31
C. 2.47
D. 3.23
E. 3.25

The rate of worker #1 is 1 truck/6 hours. This can also be 1/6 trucks/1 hour. The rate of worker #2 is 1/7. When together, they will complete 1/6 + 1/...