Here is an easy Descriptive Statistics Data Sufficiency Question What is the median of a set of 10 positive integers? 1. The numbers are in an AP with the first term being 10 2. The arithmetic mean of these 10 numbers is 55 Answer - Choice C Explanatory Answer Break down the process of solving any DS question into 3 mandatory steps and 1 optional step. Step 1 : … [Read more...] about Arithmetic Mean – Data Sufficiency

# GMAT Arithmetic Theory & Practice Questions

## Number Properties Problem Solving : 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...] about Number Properties Problem Solving : Factors

## GMAT Problem Solving : Descriptive Statistics

Here is a simple descriptive statistics question. Question When a student Joe, weighing 41 kg, joins a group of students whose average weight is 30 kg, the average weight goes up by 1 kg. Subsequently, if two students, excluding Joe, leave the group the average weight comes back to 30 kg. What is the difference between the average weight of the two students who left and the … [Read more...] about GMAT Problem Solving : Descriptive Statistics

## GMAT DS : Number Properties : Even numbers

Is the positive integer x even?1. (x - 1) is a prime number2. (x^2 - 1) is a prime number … [Read more...] about GMAT DS : Number Properties : Even numbers

## GMAT DS : Percents, Profits

QuestionTwo products A and B that cost $2000 and $1000 respectively were marked up with a profit of x%. What is x?1. If a discount of (2x/5)% is offered on the marked price of product A and if product B is sold at the marked price, the profit made on both products will be the same.2. If the markup on Product A is half that of product B, the profit made on both the products will … [Read more...] about GMAT DS : Percents, Profits