Quite a lot of interesting DS questions appear from Number Properties and Number Theory. Here is one such question.When a positive integer 'x' is divided by a divisor 'd', the remainder is 24. What is d?1. When 2x is divided by d, the remainder is 23.2. When 3x is divided by d, the remainder is 22.Correct AnswerChoice A. Statement 1 alone is sufficient; statement 2 is not … [Read more...] about Number Properties DS – Remainders, divisors
GMAT Arithmetic Theory & Practice Questions
GMAT Descriptive Statistics : Averages
Question If the average of 5 positive integers is 40 and the difference between the largest and the smallest of these 5 numbers is 10, what is the maximum value possible for the largest of these 5 integers? A. 50B. 52C. 49D. 48E. 44 Correct Answer : Choice D. 48 ExplanationThe average of 5 positive integers is 40. i.e., the sum of these integers = 5*40 = 200 Let … [Read more...] about GMAT Descriptive Statistics : Averages
Mean, Median – GMAT Descriptive Statistics
HiQuestions testing you understanding of the link betwen Mean and Median are frequently tested in the GMAT.Here is a basic but interesting question on the combo.QuestionPositive integers from 1 to 45, inclusive are placed in 5 groups of 9 each. What is the highest possible average of the medians of these 5 groups?A. 25B. 31C. 15D. 26E. 23 Correct AnswerChoice B. 31 is the … [Read more...] about Mean, Median – GMAT Descriptive Statistics
Number Properties – Product of factors
What is the product of all positive factors of 18? A. 324 B. 5832 C. 39 D. 1521 E. 3042 The correct answer is 5832. Choice B. Let us first focus on how to find the answer methodically and then understand why the method works. The How? Step 1: Find the number of factors for 18. Step 1a. Express 18 as a product of its prime factors. 18 = 2 * 3^2 Step 1b. Increment the … [Read more...] about Number Properties – Product of factors
Descriptive Statistics – Mean and Median; Divisibility
How many numbers of 7 consecutive positive integers are divisible by 6?1) Their average is divisible by 62) Their median is divisible by 12 … [Read more...] about Descriptive Statistics – Mean and Median; Divisibility