This question is a relatively easy question on LCM and HCF of two numbers. QuestionIf the product of two positive integers is 144, which of the following could be the LCM and HCF of the two numbers?I. LCM : 24; HCF : 6II. LCM : 18; HCF : 8 III. LCM : 16; HCF : 9A. I onlyB. II and III only C. I and II onlyD. I and III only E. I, II and IIICorrect Answer : Choice … [Read more...] about Number Properties : LCM, HCF
GMAT Number Theory
GMAT Data Sufficiency Practice : Inequalities & Number Properties
QuestionIs a + b > 0?1. a - b > 02. |a| < |b|Correct Answer is Choice C. Both statements together are sufficient to answer the question.Explanatory AnswerAn "IS" question is answered when you can provide a definite YES or a definite NO as an answer to the question using the data.We need to answer if a + b > 0.Statement 1: a - b > 0.We can infer that a > b.If … [Read more...] about GMAT Data Sufficiency Practice : Inequalities & Number Properties
DS Number Properties – Divisibility – Prime Divisors
This is an interesting Data Sufficiency question that tests your understanding of divisibility, indices and prime factors.QuestionIf n is an integer, is n3 divisible by 54? 1. n2 is divisible by 6. 2. n3 is divisible by 36.Correct Answer : Choice D. Each statement is independently sufficient to answer the question.Explanatory AnswerFor "is" questions in DS, we … [Read more...] about DS Number Properties – Divisibility – Prime Divisors
GMAT Data Sufficiency – Statistics: Mean Median
This data sufficiency question tests your understanding of Inequalities and descriptive statistics.QuestionIs 'b' the median of 3 numbers a, b, and c?1. b/a = c/b2. ab < 0The correct answer is C. Both the statements together are sufficient to answer the question.Explanatory answerWhen the numbers a, b, and c are arranged in an ascending order, the middle number is the … [Read more...] about GMAT Data Sufficiency – Statistics: Mean Median
GMAT Inequalities – Data Sufficiency
Inequalities and Data Sufficiency are favorite combinations in the GMAT quant section. Here is a relatively easy question Is 'a' positive? 1. a - b > 0 2. 2a - b > 0 Correct Answer is Choice E. The data is insufficient. Explanatory Answer Let us evaluate statement 1 alone. a - b > 0. From this statement we can conclude that a > b. But we cannot … [Read more...] about GMAT Inequalities – Data Sufficiency