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02 Jun 2021, 01:30
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (00:42) correct
7%
(01:01)
wrong
based on 115
sessions
History
Date
Time
Result
Not Attempted Yet
Are the two distinct lines, \(l_1\) and \(l_2\), parallel?
(1) The line \(l_1\) is perpendicular to \(l_3\).
(2) The line \(l_2\) intersects \(l_3\), forming a right angle.
(1) The line \(l_1\) is perpendicular to \(l_3\).
(2) The line \(l_2\) intersects \(l_3\), forming a right angle.
02 Jun 2021, 02:16
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Bunuel
Statement (1) The line \(l_1\) is perpendicular to \(l_3\).
No information about line l2
Not sufficient
Statement (2) The line \(l_2\) intersects \(l_3\), forming a right angle.
No information about line l1
Combined
l1 and l2 are perpendicular to l3; hence, they are parallel to each other
Sufficient
C is the answer IMO
asishron29181
Joined: 04 May 2020
Last visit: 04 Nov 2022
Posts: 185
Given Kudos: 68
Location: India
Schools: Great Lakes (I)
GMAT 1: 610 Q47 V27
WE:Programming (Computer Software)
02 Jun 2021, 05:45
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Are the two distinct lines, l1 and l2, parallel?
(1) The line l1 is perpendicular to l3.
Tells us nothing about l2.
Not sufficient.
(2) The line l2 intersects l3, forming a right angle.
Tells us nothing about l1.
Not sufficient.
Combining both statements:
l1 _|_ l3 and l2 _|_ l3
Hence l1 is parallel to l2
IMO C
(1) The line l1 is perpendicular to l3.
Tells us nothing about l2.
Not sufficient.
(2) The line l2 intersects l3, forming a right angle.
Tells us nothing about l1.
Not sufficient.
Combining both statements:
l1 _|_ l3 and l2 _|_ l3
Hence l1 is parallel to l2
IMO C
