Descriptive Statistics that includes mean, weighted mean, median, standard deviation and range is a GMAT favorite. At times it becomes "virulent" in its data sufficiency avatar.Here is a medium difficulty DS question from Descriptive Statistics:DirectionsThis data sufficiency problem consists of a question and two statements, labeled (1) and (2), in which certain data are … [Read more...] about GMAT Statistics Practice – Median
GMAT Quant Theory & Practice Questions
GMAT Geometry: Acute Angled Triangles
Geometry concepts such as basic properties of triangles and how to find if a given triangle is a right triangle or an acute angled triangle or an obtuse angled triangle are often tested in GMAT.Here is a question using two basic rules about triangles.QuestionIf 10, 12 and 'x' are sides of an acute angled triangle, how many integer values of 'x' are possible?(A) 7(B) 12(C) 9(D) … [Read more...] about GMAT Geometry: Acute Angled Triangles
GMAT Inequalities, Quadratic Equation
Inequalities is a big favorite of the GMAT test makers. Inequalities, especially presented as a data sufficiency question that appear in the GMAT test are many a times potential land mines.Here is an inequality question in the problem solving formatWhich of the following is correct if x is a real number and (x - 11)(x - 3) is negative?A. x^2 + 5x + 6 < 0B. x^2 + 5x + 6 > 0C. 5 … [Read more...] about GMAT Inequalities, Quadratic Equation
GMAT DS : Number Properties
Number Theory is a big hit with the GMAT test setters, especially when setting Data Sufficiency Questions. Here is a GMAT Data Sufficiency practice question from the Number Properties and Number Theory topic. Directions This data sufficiency problem consists of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether … [Read more...] about GMAT DS : Number Properties
Number of diagonals in convex polygon : GMAT
Any n-sided convex polygon with more than 3 sides will have n(n-3)/2 diagonals. For instance, let us look at a square. A square has 4 sides and 2 diagonals. Let us apply this formula with n = 4. We get 4(4-3)/2 = 2 diagonals. Here is a question on finding the number of diagonals. If a n-sided convex polygon has 14 diagonals, how many sides does the polygon … [Read more...] about Number of diagonals in convex polygon : GMAT