This GMAT practice question tests your understanding of 3 topics. The core topic tested is Descriptive Statistics. Basic understanding of Prime Numbers and Progressions is needed to solve this question. Question The ages of three friends are prime numbers. The sum of the ages is less than 51. If the ages are in Arithmetic Progression (AP) and if at least one of the ages is … [Read more...] about Descriptive Statistics, Prime Numbers, Progression
GMAT Problem Solving
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
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
GMAT PS : Quadratic Equation : Parabola cutting x-axis
Here is a question testing concepts of Quadratic equation and nature of roots of quadratic equation. If y = x2 + dx + 9 does not cut the x-axis, then which of the following could be a possible value of d? I. 0 II. -3 III. 9 A. III only B. II only C. I and II only D. II and III only E. I and III only Correct Answer : Choice C. Values that 'd' could take are 0 or … [Read more...] about GMAT PS : Quadratic Equation : Parabola cutting x-axis