Math (PS) A perfect number is defined as one for which the sum of all the unique factors less the number itself equals to the number. For instance, 6 is…
Posts published in “Problem Solving”
Helpful articles and questions asked in Problem Solving section of GMAT Quant
Math (PS) A soccer coach riding his bike at 24 km/h reaches his office 5 minutes late. Had he traveled 25% faster, he would have reached the office 4 minutes…
When discussing fractions, I often find a very interesting area of confusion among students. I'll ask them to compare, for example, 1/3 and 1/4. Almost everyone correctly answers that 1/4…
Math (PS) What is the last digit of the following number ? (A) 6 (B) 5 (C) 2 (D) 1 (E) 0 GMAT Daily Deals Get $100 off a Manhattan…
Math (PS) 6 students in a group study different languages as specified: * Russian: 4 * Ukrainian: 3 * Hebrew: 2 Each student studies at least 1 language. If it…
Math (PS) How many five-digit numbers can be formed using the digits 0, 1, 2, 3, 4 and 5 which are divisible by 3, without repeating the digits? (A) 15…
Math (PS) One fisherman was telling his friends that he caught a fish that had a 60 foot long head. It also had a tail that was as long as…
Math (PS) Which set(s) has the greatest standard deviation? 1. Set 1 consisting of 10 digits 2. Set 2 consisting of 10 first positive consecutive even numbers 3. Set 3…
Math (PS) A car dealership sold two cars: the first car at a 10% profit and the second car at a 10% loss, which gave them an overall profit margin…
Math (PS) A computer generated a sequence of numbers using the following formula: is the common difference between any two consecutive terms of the sequence If the sum of the…