An interesting GMAT problem solving practice question that combines two topics - counting methods and elementary number properties related to divisibility of numbers by 4. Question How many five digit positive integers comprising only the digits 1, 2, 3, and 4, each appearing at least once, exist such that the number is divisible by 4? 120 24 72 60 … [Read more...] about Permutation and Divisiblity
GMAT Arithmetic Theory & Practice Questions
GMAT Number Properties LCM HCF
An interesting GMAT Problem Solving question from Number Properties & Number Theory. It tests your understanding of LCM and HCF and certain key results regarding LCM and HCF of two or more numbers. Question If the LCM of two numbers a and b is 1104 and their HCF is 4, which of the following MUST be true? I. a * b = 4416 II. a and b are both divisible by … [Read more...] about GMAT Number Properties LCM HCF
Simple Number Properties Question
If the integer N = 139,k50 where k is the hundreds digit, N can NEVER be divisible by which of the following?A. 2B. 3C. 4D. 6E. 9 … [Read more...] about Simple Number Properties Question
GMAT Mixtures – Problem Solving Question
60% of the students in a class are instate students. 60% of the students in the class are women. If there are twice as many instate men in the class as are instate women, and the number of instate men exceeds instate women by 12, how many more women in the class are not instate women?A. 12B. 60C. 48D. 24E. 0 … [Read more...] about GMAT Mixtures – Problem Solving Question
Data Sufficiency : Number Properties and Probability
A Data Sufficiency Question - Number properties and ProbabilitySet A contains distinct integers: A = {2,4,6,-8,x,y}. When two numbers from this set are picked and multiplied, what is the probability that the product is less than zero?(1) x*y is not equal to zero.(2) |x| = |y|Correct Answer is choice B. Statement 2 alone is sufficient.Explanatory AnswerAlternatively, here is the … [Read more...] about Data Sufficiency : Number Properties and Probability