700-800 level problems pls.

[mntrlgmat]

What did you mean by "So if the total cost is < 100, a can only go up since a is cheaper. so a > 6.33 but we are looking to see if a > 8".

What exactly do you mean by a can only go up since its cheaper?

[ss1]

where can we get the kevin spain doc? has he written it himself?

[rockin4life]

Originally Posted by CyberSpy

Can some one tell me from where I can get 700-800 level problems?

you can also post some very hard questions in this thread.

1.) The Kaplan advanced book is probably about 700 level, but not too much harder.

2.) Manhattan's challenge problem

3.) Hard free GMAT questions. Just go to the problem type and see the "hard" category.

[ss1]

–5 –4 –3 –2 –1 0 1 2 3 4 5 (numbers 3 to -5 on the number line are highlighted)
Which of the following inequalities is an algebraic
expression for the shaded part of the number line
above?
(A) |x| ≤ 3
(B) |x| ≤ 5
(C) |x − 2| ≤ 3
(D) |x − 1| ≤ 4
(E) |x + 1| ≤ 4

this is OG 12, Q130
i don't understand why we don't chose B. plug in any number, and |x| will give ≤ 5. why is the answer E and not B? (even though i do understand that E is correct as well, but so is B)

[cliq]

SS1,

I would suggest you to always open a new thread for new questions to get better response.

to answer your question, in B even +4 and +5 is included and we need only the range -5 to 3

in E,
x + 1 <= 4
x <= 3
x = 3 2 1 0 -1 -2 -3

x + 1 is negative
then -(x + 1) <=4
- x - 1 <= 4
-x <= 5
x = -5, -4, -3, -2 , -1 , 0 , 1 ,2 .... 5

Intersection of the above two sets gives the answer

[MBAchase]

You can get from MBAchase : GMAT prep and MBA Application essays.

[Brent Hanneson]

You can find a lot of free questions (both medium and very challenging) at Magoosh

[matt.lopz]

find question by users , 800bob, erin