Hi, I am looking at the Foundations of GMAT Math 5th edition book. In Chapter 2 drill set 8 (page 89) I am confused with this question: 31. The only prime factors of a number are 5 and 17. What is the number and what are all its factors? I said it cannot be determined but the book's answer is to the...

Hi, Upon reviewing my CAT exams , I came across this sentence correction question that I got wrong. Elderly patients, many who take expensive brand-name medications daily, could reduce their medical costs by switching to generic drugs and making lifestyle changes. (A) many who (B) many of them who (...

Hi, Upon reviewing my CAT exams , I came across this sentence correction question that I got wrong. Elderly patients, many who take expensive brand-name medications daily, could reduce their medical costs by switching to generic drugs and making lifestyle changes. (A) many who (B) many of them who (...