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28 Oct 2014, 08:23
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
61% (01:03) correct
39%
(00:57)
wrong
based on 841
sessions
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Not Attempted Yet
Tough and Tricky questions: Coordinate Geometry.
(1) l1 is parallel to l2
(2) y = 70
Attachment:
untitled.GIF [ 2.97 KiB | Viewed 19039 times ]
Updated on: 04 Feb 2023, 09:45
Originally posted by BrentGMATPrepNow on 19 Jun 2017, 06:52.
Last edited by BrentGMATPrepNow on 04 Feb 2023, 09:45, edited 1 time in total.
Last edited by BrentGMATPrepNow on 04 Feb 2023, 09:45, edited 1 time in total.
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Bunuel
Target question: What is the value of x?
IMPORTANT: For geometry Data Sufficiency questions, we are typically checking to see whether the statements "lock" a particular angle, length, or shape into having just one possible measurement. This concept is discussed in much greater detail in the video below.
Notice that neither statement affects the placement of line3
So, let's jump straight to....
Statements 1 and 2 combined
Consider the following two diagrams that both satisfy the conditions in statements 1 AND 2.
Notice that, each time we move line3, the value of x changes.
So, there's no way to determine (i.e., lock in) the value of x
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
RELATED VIDEOS
General Discussion
28 Oct 2014, 08:51
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Statement 1: It just says about the lines l1 and l2. Nothing about the other 2 lines L3 and L4. So insufficient.
Statement 2: Says only about the angle of y. Nothing about the lines. So insufficient.
Combining (1) & (2): Still no information on lines L3 and L4.
So the answer is E.
Statement 2: Says only about the angle of y. Nothing about the lines. So insufficient.
Combining (1) & (2): Still no information on lines L3 and L4.
So the answer is E.
