An interesting number properties question that tests your understanding of odd numbers, even numbers and inequalities. The best thing about a question of this kind is that there is no formula to get the answer. Try the question before checking out the solution video. Question If x is a positive … [Read more...]

## GMAT Number Theory LCM HCF

An interesting Problem Solving question from Number Theory. You need to know all the basic properties of LCM and HCF of two numbers and the relation between LCM and HCF. If you are already not familiar with the topics, start with understanding what LCM and HCF actually denote (not what the acronyms … [Read more...]

## Inequalities & Number Properties

This one is an Inequalities and Number Properties Data Sufficiency Question. You will most likely get questions that test indices, absolute value and inequalities in the GMAT quant section - in its potent variant - data sufficiency. I strongly recommend that you understand the basics … [Read more...]

## Simple Number Properties

If the integer N = 139,k50 where k is the hundreds digit, N can NEVER be divisible by which of the following? A. 2 B. 3 C. 4 D. 6 E. 9 Explanatory Answer Let us quickly recap tests of divisibility for the 5 numbers given in the question. Test of divisibility for 2: The number should … [Read more...]

## Equations

GMAT Problem Solving QuestionIn a test comprising 50 questions, a student attempts all questions. For every correct answer the student is awarded 1 mark. She will get negative marks for incorrect answers as per the following rule.1. 0.25 negative mark for each of the first 10 incorrect answer.2. 0.5 … [Read more...]

## Number Properties : Factors

Here is an interesting GMAT number property problem solving question. Concept tested : number of factors.Integer x has n factors; 3x has 3 factors; Which of the following values can n take? I. 1 II. 2 III. 3 A. I only B. II only C. I or II D. II or III E. I or III … [Read more...]