Latest Articles from GMAT Tutor Blogs

  • Magical Squares Game

    by on November 26, 2014

    Whether introduced as children in elementary school, as adults in the workplace, or somewhere in between, the concept of magic squares has fascinated people for centuries; The Wikipedia article has discoveries of magic squares dating back to 650 B.C. in China.

    Magic Squares of size n (for n >= 3) are n by n grids where the numbers 1, 2, …, n2 ... Read More

  • Scholarship Winner!

    by LA Tutors 123 Blog on November 11, 2014

    We at LA Tutors are passionate about sparking the creative genius in students and would love to commend those outstanding students who have a made a difference in the lives of others in some innovative or technological fashion. In order … Continue reading → Read More

  • QR Decomposition

    by on November 7, 2014

    Suppose we have a problem that can be modeled by the system of equations Ax = b with a matrix A and a vector b. We have already shown how to use Gaussian Elimination to solve these methods, but I would like to introduce you to another method – QR decomposition. In addition to solving the general system of equations, this method can also be used ... Read More

  • Ethan Sawyer ("The College Essay Guy") provides resources and coaching to high school Juniors and Seniors who are experiencing writer’s block on their college essays or simply not sure how to structure their stories. He also provides free resources to counselors … Continue reading → Read More


    by Pro GMAT on November 5, 2014

    Again after an extensive study session, hard work and a lot of paper work, I took another practice test and this time it was 660. Breakup is Q 50, V 30. Well I am not totally disappointed with my score, I am not satisfied though. I was looking for a 700 but the score is moving … Continue reading → Read More

  • Taking the SAT with Accommodations             Taking the SAT is a daunting task for anyone, but it can be especially challenging if you are a student with a disability. The good news is that, in the professional world, you will … Continue reading → Read More

  • GMAT Question of the Day - Data Sufficiency - DivisibilityWhat is the greatest common factor of positive integers k and m?

    (1) When integer k is divided by two the result is an integer with no prime factors.

    (2) m = 25

    AnswerSelectShow C.GMAT Question of the Day SolutionThe post GMAT Question of the Day - DS - Divisibility appeared first on Atlantic ... Read More

  • As an independent tutor, I pride myself in taking unorthodox approaches to meet my clients’ needs. Sometimes, this requires creativity in how I teach a concept, how I structure a lesson, or how I assign homework to my students. A good GMAT tutor will target your specific needs, and if that requires breaking from convention, then that’s ... Read More

  • GMAT Question of the Day - Data Sufficiency - InequalitiesIn a certain forest 1/5 of the trees are Walnuts and 1/6 of the trees are Birches. What is the number of birch trees in the forest?

    (1) The difference between the number of Walnut trees and the number of Birch trees is greater than 10

    (2) There are fewer than 350 total trees

    AnswerSelectShow ... Read More

  • Which of the following sets has the same standard deviation as the set that contains k, k + 2, and 2k?

    A. k-2, -2, 0

    B. 2k, 2k + 4, 4k

    C. 1, 2, k

    D. k, k-1, k-2

    E. k/2, k, 2

    AnswerSelectShow A.The post GMAT Question of the Day - PS - Standard Deviation appeared first on Atlantic GMAT. Read More

  • GMAT Question of the Day - Data Sufficiency - Overlapping SetsOf the leopards at a certain zoo, 20% are both spotted and mature. If all the leopards at the zoo are either spotted or not spotted, or mature or immature, is the ratio of the number of immature leopards who are spotted to the number of immature leopards who are not spotted greater than 1?

    (1) ... Read More

  • GMAT Question of the Day - Problem Solving - PercentAt the beginning of the year in town X, 30% of the population had liberal values. At the end of the year the total population had grown by 12% and the proportion of the population with liberal values had decreased by 5%. From the beginning of the year to the end of the year what was the approximate ... Read More

  • GMAT Question of the Day - Problem Solving - Exponents3^a+3^b+3^c+3^d = 2

    If a, b, c, and d are integers then what is the value of a + b + c + d?

    A. -3

    B. -2

    C. -1

    D. 1

    E. 2

    AnswerSelectShow A.GMAT Question of the Day SolutionIf you try algebra on this GMAT question of the day you'll have some issues. This isn't solvable in a conventional way. ... Read More

  • GMAT Question of the Day - Problem Solving - GeometryIf s is between 0 and 9, how many different equilateral triangles with side s can be formed that have an area which is an integer value?

    A. 3

    B. 4

    C. 5

    D. 6

    E. 7

    AnswerSelectShow E.GMAT Question of the Day SolutionThis GMAT question of the day is tough but not impossible. What makes it tough? You ... Read More

  • Keep running…

    by Pro GMAT on September 29, 2014

    Phew!! A lot of work, tensions, questions, explanations, failures, assignments, understandings, supplements, answers, learnings, rebuilding concepts, juices, exercises, managements, thoughts, reasons, spirits, blessings, and finally a minute view of some sunlight in the darkest. It always feels like a come back when writing my new thoughts and achievements. ... Read More

  • GMAT Question of the Day - Problem Solving - Geometry

    If DF I| AC and x = 1.5y, what is the ratio of the areas of triangle ABC and triangle DEF?

    A. 4/7

    B. 3/2

    C. 7/4

    D. 9/4

    E. 16/3

    AnswerSelectShow D.GMAT Question of the Day SolutionThe rules governing similar triangles are relatively basic. So what's challenging about GMAT similar triangles ... Read More