Could someone please go through the thought process in solving this data sufficiency? If X>1, what is the value of integer X? (1)There are X unique factors of X (2)The sum of X and any prime number larger than X is odd Is it D? Here's my solution, not sure if it's a perfect one but... Like it says ...

A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as wel...

grandh01 wrote:If m=kp, where k and m are different positive integers,
then does m have more than 5 prime factors?

1) k has 5 different prime factors
2) p has 5 different prime factors

OA IS E

Certain hockey players began wearing helmets before the National league required them to do so. These players were 20% less likely to suffer head injuries than other players. Obviously, hockey helmets are critical in preventing head injuries. Which of the following, if true, would weaken the argume...

If x,y, and n are positive integers, is (x/y)^n > 1000 1) x=y^3 and n>y 2) x>5y and n> x oa is B Put Statement 1 in the equation => y^2n, n>y(that means n can be 2,3,4...) It's not necessarily >1000, so it's insufficient. So x/y is great than or at least 6 and 6^6 >100, so it's sufficient. So the a...

If n is a positive integer and the product of all the integers from 1 to n, inclusive, is a multiple of 990, what is the least possible value of n? A) 10 B) 11 C) 12 D) 13 E) 14 Thanks! Easy, first factor the number 990= 2*3^2*5*11 So if the product is the multiple of 990, then n must be greater th...

Sarah drove an average speed of 30 miles per hour for the first 30 miles of her trip. She drove an average of 60 miles per hour the remaining 30 miles of her trip. What was the average speed of her entire trip? A) 33 mph B) 40 mph c) 50 mph D) 52 mph E) 55 mph It took her 1 hour for the first 30 (3...