Hey guys...
I ran into three questions in GMAT Prep 2 that I couldn't quite master even when I saw the answer...
1) I had to attach it because it involves geometry and I couldn't replicate the figure. I have no idea how to get the answer which is D (EACH statement is sufficient). I can solve the problem using both statements quite easily.
2) I can solve this with a calculator (not allowed) or by hand but it takes WAY too long to be sufficient at solving problems quickly. Does anyone have any shortcuts/ hints to approximating...
(1001^2)-(999^2) / (101^2)-(99^2)
(the first part divided by the second)
a) 10
b) 20
c) 40
d) 80
e) 100
Again I know how to get the answer (A)...I just need to get it faster
3)
if w+x < 0
is w + y > 0?
I) x+y > 0
II) y< x < w
a) I is suff.
b) II is suff.
c) BOTH
d) EACH
e) neither
answer is B and I can do it but it takes me awhile.... A concise explanation that would help on future problems would be helpful...thanks guys
I ran into three questions in GMAT Prep 2 that I couldn't quite master even when I saw the answer...
1) I had to attach it because it involves geometry and I couldn't replicate the figure. I have no idea how to get the answer which is D (EACH statement is sufficient). I can solve the problem using both statements quite easily.
2) I can solve this with a calculator (not allowed) or by hand but it takes WAY too long to be sufficient at solving problems quickly. Does anyone have any shortcuts/ hints to approximating...
(1001^2)-(999^2) / (101^2)-(99^2)
(the first part divided by the second)
a) 10
b) 20
c) 40
d) 80
e) 100
Again I know how to get the answer (A)...I just need to get it faster
3)
if w+x < 0
is w + y > 0?
I) x+y > 0
II) y< x < w
a) I is suff.
b) II is suff.
c) BOTH
d) EACH
e) neither
answer is B and I can do it but it takes me awhile.... A concise explanation that would help on future problems would be helpful...thanks guys
- Attachments
-
- geometry.doc
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