LR
To many ESL takers including myself, the LR section could be very confusing at first. The unfamilarity with English, adds to the already convoluted phrasing of LR questions can make it particularly hard.
I mainly used the powerscore bible system when attacking LT questions, but there are some mathematics tools I also found particularly useful in helping my understanding many crucial concepts.
the use of Venn diagrams
the concept of necessary condition and sufficient condition was particularly hard for me initially. it took me a week to finally realize "sufficient conditions do not cause necessary conditions to happen"
I found it was easier to translate the relationship of necessary condition and sufficient condition to the set language
i.e.
necessary condition is a subset of sufficient condition
it can also be shown in the following Venn diagram
using this the concept of contrapositive is straight forward
i.e. if you are outside the sufficient condition set, you are naturally out of the necessary condition set
another example:
Salesperson: When a salesperson is successful... if using powerscore's diagrmming, it should look something like this:
premise:
success --> strong client base
>=3 yr to develop client base --> comfortable living in sales (existence of a strong client base)
conclusion:
success --> >= 3 yr
just by looking at this diagram, it's not exactly straight forward to see the right answer
with a Venn diagram on another hand, it is quite clear that the question has ignored the possibility of the shaded region
i.e. some salesperson succeeded with less than 3 years of experience, they also have a strong client base "some salespeople require fewer than 3 years in which to develop a strong client base."
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I also find a Venn diagram can be very helpful with some/most questions
for example: PT 62 S2 Q19
In West Calverton, most pet stores sell exotic birds...
it will be so much easier to use a Venn diagram to describe the question, and to see the right answer