Critical Reasoning

lunarpower wrote:

aspirant2011 wrote:Yup I am also with option D...........

right -- but make sure that you note the relationship between this paragraph & answer choices (which i made myself, as an analogy) and the original. i.e., all of your statements about the answer choices apply similarly to the OG12 #43 answer choices, upon which they are modeled.

also, don't forget that the point of this exercise is NOT to *answer* the problem that i have posted! the point of the exercise is to make your own version of the problem, with your own passage and answer choices.
you can't claim a full understanding of the CR problems until you can write your own problems that work in the same way.

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the same is true for SC concepts with which you struggle, too -- you should be able to write your own sentences that use each SC concept that you learn.
(DO NOT try to do this by altering the answer choices to an existing question -- that just causes nothing but trouble, mostly for unanticipated reasons. instead, when you learn a new grammar thing / idiom / construction / whatever else, you should try writing a few sentences of your own, from scratch, that use it. if you can't, then that means you don't fully understand it.)

lunarpower wrote:i received a pm.

the answer to this problem is (d), but this problem is basically useless for the GMAT -- it tests formal logic, which is not in the canon of concepts tested on GMAT critical reasoning.
i.e., the GMAT will *not* contain problems with all of this "if A then B, if not-C then not-D, some X's are Y's, etc" type of reasoning.

in fact, solving practice problems like this will actually work against you, by training your brain to think in terms of formal logic -- if you freeze your brain into this way of thinking, you'll get slaughtered on the GMAT, because very close to 0% of GMAT CR problems have anything whatsoever to do with formal logic.

this type of question appears very, very frequently on the lsat, so that's probably where it comes from. stay away.

aspirant2011 wrote:Either Perry's faction or Tucker's faction, but not both, will win control of the government. If Perry's faction wins, the nation will suffer economically. If Tucker's faction wins, the nation will suffer militarily. Given the statements in the passage, which one of the following statements
must be true?

(A) It is possible, but not certain, that the nation will neither suffer economically nor suffer militarily.

(B) If the nation suffers economically, it is certain that Perry's faction has won control of the government.

(C) It is certain that the nation will suffer either economically or militarily, and also certain that it will not suffer both.

(D) If the nation suffers militarily, it is possible, but not certain, that Tucker's faction has won control of the government.

(E) If the nation suffers both economically and militarily, it is certain that neither Perry's faction nor Tucker's has won control of the government.

[spoiler]OA: Please discuss each answer choice in detail.[/spoiler]