Apologies, if this question has already been discussed.
If x>y>z^2, then which of the following could be true?
x>y>z
[II] z>y>x
[III] x>z>y
[A] I only
I and II only
[C] II and III only
[D] I and III only
[E] I, II, and III
What is a quick method to find the answer? I spent considerable amount of time on this question.
Time SUCKER- Could be TRUE
This topic has expert replies
Is the answer D?
Just evaluate each one - doesn't take much time.
It tells you x>y>z^2
I. x>y>z. Since z is going to be smaller than z^2 every time (except with fractions), this could definitely be true. Think of a quick example. If x=100, y=99 and z=3. WORKS
II. z>y>x. The stem tells you x>y, so this could not be true. DOESNT WORK
III. x>z>y. Similar logic to I. Think of fractions. If y=1/3 and z=1/2, then z>y but z^2 (which = 1/4) is < y. WORKS
Just evaluate each one - doesn't take much time.
It tells you x>y>z^2
I. x>y>z. Since z is going to be smaller than z^2 every time (except with fractions), this could definitely be true. Think of a quick example. If x=100, y=99 and z=3. WORKS
II. z>y>x. The stem tells you x>y, so this could not be true. DOESNT WORK
III. x>z>y. Similar logic to I. Think of fractions. If y=1/3 and z=1/2, then z>y but z^2 (which = 1/4) is < y. WORKS
jakesing wrote:Is the answer D?
Just evaluate each one - doesn't take much time.
It tells you x>y>z^2
I. x>y>z. Since z is going to be smaller than z^2 every time (except with fractions), this could definitely be true. Think of a quick example. If x=100, y=99 and z=3. WORKS
II. z>y>x. The stem tells you x>y, so this could not be true. DOESNT WORK
III. x>z>y. Similar logic to I. Think of fractions. If y=1/3 and z=1/2, then z>y but z^2 (which = 1/4) is < y. WORKS
Agree.
-
- Senior | Next Rank: 100 Posts
- Posts: 34
- Joined: Tue May 12, 2009 6:29 am
- Location: Chicago, IL
- Thanked: 3 times
- GMAT Score:770
Statement 1 can be true. e.g., x=1, y = 1/2, z = 1/4
Statement 3 can be true. e.g., x =1, y = 1/3, z = 1/2
Statement 2 can also be read to say x < y, but we're given that x > y. So I'm not sure how D is wrong... This is interesting! Would love to know the answer! Where'd I make a mistake?
Tim
Statement 3 can be true. e.g., x =1, y = 1/3, z = 1/2
Statement 2 can also be read to say x < y, but we're given that x > y. So I'm not sure how D is wrong... This is interesting! Would love to know the answer! Where'd I make a mistake?
Tim
-
- Newbie | Next Rank: 10 Posts
- Posts: 5
- Joined: Thu Jul 02, 2009 6:23 am