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2016 verbal review--images from ground-based telescopes

Hello, The question is attached to this post. I am extremely baffled by this question. The OA is E And I chose B because I believe that only the answer choice that relates to the ground-based telescopes is right one. And OA DOES NOT mention anything about ground-based telescope, how do we know it ha...

by allenh

Tue Sep 15, 2015 5:42 pm
Forum: Critical Reasoning
Topic: 2016 verbal review--images from ground-based telescopes
Replies: 23
Views: 11960

a confusing DS

X=? 1.a^(2x)=b^(x+6) 2.ab=1 It seems that I should choose C for this one as when you combine these two statements, you will get x=-2. Since a and b are different letters, I assume they represent different numbers. I am just wondering if I need to consider a=b=1, cuz that will change the answer to E..

by allenh

Sun Sep 06, 2015 4:58 am
Forum: Data Sufficiency
Topic: a confusing DS
Replies: 3
Views: 1389

tricky DS

DS:

Number XYZ is the product of positive integer n and 9. Is X+Y+Z=9?

(1) x+y+z<15
(2) x+y+z>8

I have absolutely no idea how to solve this. Can someone please help me?

by allenh

Sat Sep 05, 2015 1:08 am
Forum: Data Sufficiency
Topic: tricky DS
Replies: 2
Views: 1364

Orangutan--an interesting question

Orangutan, a species of Pondigae, is an ape with long reddish hair that comes from Borneo and Sumatra and is able to walk upright in trees by using two arms to keep balance. Since the ape, human, and other primates have the same ancestors called Ampipithecus, we can reach the conclusion that, instea...

by allenh

Wed Aug 19, 2015 12:27 am
Forum: Critical Reasoning
Topic: Orangutan--an interesting question
Replies: 1
Views: 2110

Many gardeners believe---2016 verbal review question

Many gardeners believe that the variety of clematis vine that is most popular among gardeners in North America is jackmanii. This belief is apparently correct since, of the one million clematis plants sold per year by the largest clematis nursery in North America, ten percent are jackmanii. Which of...

by allenh

Mon Jul 27, 2015 10:28 pm
Forum: Critical Reasoning
Topic: Many gardeners believe---2016 verbal review question
Replies: 10
Views: 7877