Number Properties is an often tested area as far as Data Sufficiency is concerned. Here is an interesting question. Question Is the two digit positive integer P a prime number? 1) P + 2 and P – 2 are prime. 2) P – 4 and P + 4 are prime. Statement (1): P + 2 and P – 2 are prime. One out of 3 consecutive odd integers, (P - 2), P, and (P + 2) will definitely be a … [Read more...] about GMAT Number Properties DS question
GMAT Number Properties
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
GMAT Problem Solving : Number Properties
This question is an interesting Number Properties Problem Solving GMAT prep question . How many digits does the product of 412 and 523 contain? A. 12 B. 13 C. 23 D. 24 E. 35 The correct answer is choice D. We can rewrite the given numbers as 224 * 523. i.e., 2 * 223 * 523 = 2 * 1023. This is a 24 digit number. … [Read more...] about GMAT Problem Solving : Number Properties
Number Properties : Data Sufficiency
Number Properties is an all time favorite with the GMAT test makers. Especially in the DS avtar, number properties questions could be quite potent.Here is a seemingly innocuous question from Number Properties presented as a DS question.QuestionIs ab positive?(1) (a+b)^2 < (a-b)^2(2) a = bIt is an "Is" question. So, the answer has to be a definite YES or a definite NO. It cannot … [Read more...] about Number Properties : Data Sufficiency
Data Sufficiency : Number Properties & Equations
About a third of the questions that appear on the Quantitative section of the GMAT CAT test are data sufficiency (DS) questions. Here is a DS question from Number properties and number theory. Number properties and number theory is a hot favorite when it comes to setting DS questions.For the uninitiated amongst us, this is how the instructions to a DS question will look … [Read more...] about Data Sufficiency : Number Properties & Equations