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Consider first statement (1) alone. It says 5x^2 > 3x^3. Or 5x^2 – 3x^3 > 0. Or x^2(5 – 3x) > 0. Now x^2 is always positive. So 5-3x > 0. This means 3x < 5. Or 6x < 10. Or 10 – 6x > 0. So (1) alone is sufficient to answer the question. Next consider (2) alone. It says 4 > 3/x. Now we cannot d...

by alivapriyada

Thu Sep 30, 2010 3:31 am
Forum: Data Sufficiency
Topic: Decent algebra-based DS problem
Replies: 6
Views: 1502

What is the volume, in cubic feet, of a rectangular room that has length x feet, width y feet, and height z feet? 1) x=1200/yz 2) The area of the ceiling of this room is 120 square feet and the area of each of two facing walls of this room is 100 square ft. [spoiler] OA: A [/spoiler] This might be ...

by alivapriyada

Thu Sep 30, 2010 3:26 am
Forum: Data Sufficiency
Topic: Volume of a rectangular room
Replies: 8
Views: 3697

ankur yes i understand what you mean say. with the same logic i came to a conclusion that answer is B but my question was that, if another question says that x/y is not even integer in that case should we consider x/y as decimal as well??? I know its a bit silly thing but i need to be sure. Ishaan ...

by alivapriyada

Thu Sep 30, 2010 3:10 am
Forum: Data Sufficiency
Topic: What does NOT even integer mean exactly???
Replies: 5
Views: 1533

Perhaps I'm nitpicking, but I think this question is a little unclear. Just because 100 of the red sweaters are NOT wool doesn't mean that the remaining 50 ARE wool. They could be cotton or polyester, or whatever. If it were the other way around it and the question was "how many of the red swe...

by alivapriyada

Thu Sep 30, 2010 3:02 am
Forum: Data Sufficiency
Topic: Wording?
Replies: 13
Views: 7787

Average weight of the class = (Total weight of boys + Total weight of girls) / (Total number of boys + Total number of girls) Since we cannot calculate the total weight, E has to be the answer.......hehehe ;) What is the average weight of the class? A. The ratio of the average weight of all the boy...

by alivapriyada

Thu Sep 30, 2010 2:57 am
Forum: Data Sufficiency
Topic: average weight
Replies: 10
Views: 1740

In GMAT, we only consider the positive square root. So if n = sqrt(4), the value of n is only 2 and not -2. However had it been given that n^2 = 4, then we would have to take that n has two values 2 and -2. Hence statement (1) is sufficient in this case. Thanks for the clarification, then in the ca...

by alivapriyada

Thu Sep 30, 2010 2:36 am
Forum: Data Sufficiency
Topic: Data Sufficiency and Square Roots
Replies: 4
Views: 1272

waiting for Experts reply.
M seeing the usage of 'to having' for the first time.

by alivapriyada

Thu Sep 30, 2010 2:31 am
Forum: Sentence Correction
Topic: Having reached!
Replies: 8
Views: 1611

What is the average weight of the class? A. The ratio of the average weight of all the boys and girls is 3:2 B. The number of boys and girls in the class are 40 and 60 respectively [spoiler]OA later [/spoiler] Statement 1 is insufficient, so we are left with B,C,E Statement 2 is insufficient, so we...

by alivapriyada

Thu Sep 30, 2010 2:23 am
Forum: Data Sufficiency
Topic: average weight
Replies: 10
Views: 1740

will go with E then.... eagerly waiting for OA!!! :)

by alivapriyada

Wed Sep 29, 2010 11:53 pm
Forum: Sentence Correction
Topic: All each challenge
Replies: 9
Views: 1727

M STUCK BETWEEN D & E
whether to use 'has been' or 'is'.
Because all can be singular as well as plural,depending on the situation.
so plz reveal OA.

by alivapriyada

Wed Sep 29, 2010 11:29 pm
Forum: Sentence Correction
Topic: All each challenge
Replies: 9
Views: 1727

Divisibility

N and R are integers. If N is divisible by 10^R, but cannot be divisible by 10^(R+1), R=?

1). N is divisible by 2^5, but cannot be divisible by 2^6.
2). N is divisible by 5^6, but cannot be divisible by 5^7.

[spoiler]OA not known, plz explain!!![/spoiler]

by alivapriyada

Wed Sep 29, 2010 11:07 pm
Forum: Data Sufficiency
Topic: Divisibility
Replies: 4
Views: 1376

average weight

What is the average weight of the class?
A. The ratio of the average weight of all the boys and girls is 3:2
B. The number of boys and girls in the class are 40 and 60 respectively

[spoiler]OA later
[/spoiler]

by alivapriyada

Wed Sep 29, 2010 11:03 pm
Forum: Data Sufficiency
Topic: average weight
Replies: 10
Views: 1740

I would like to go with D

by alivapriyada

Wed Sep 29, 2010 10:20 am
Forum: Critical Reasoning
Topic: Critical Reasoning
Replies: 8
Views: 1840
by alivapriyada

Wed Sep 29, 2010 10:06 am
Forum: Critical Reasoning
Topic: Critical Reasoning
Replies: 12
Views: 2367

well,M late but A here also!! :)

by alivapriyada

Wed Sep 29, 2010 9:52 am
Forum: Critical Reasoning
Topic: Assumption CR
Replies: 6
Views: 1529