Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2601:30 AM EDT
-02:30 AM EDT
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2512:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
11 Feb 2020, 00:58
Kudos
Bookmarks
C
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:
56% (00:54) correct
44%
(00:54)
wrong
based on 52
sessions
History
Date
Time
Result
Not Attempted Yet
Is one of the angles of the quadrilateral ABCD equal to 90 degrees?
(1) ABCD is a parallelogram
(2) One of the interior angles of ABCD is equal to 60 degrees
(1) ABCD is a parallelogram
(2) One of the interior angles of ABCD is equal to 60 degrees
16 Feb 2020, 23:10
Kudos
Bookmarks
Raxit85
Solution:
- • \(ABCD\) is a quadrilateral.
• \(∠A +∠B +∠C+∠D = 360\)
- • By properties of parallelogram
- o \(∠A = ∠C=x\)(say), and \(∠B=∠D=y\)(say).
- \(2x+2y = 360\)
\(x+y = 180\)
Hence, statement 1 is not sufficient. We can eliminate answer options A and D.
Statement 2: One of the angles is \(60\)
- • With this, we can’t infer anything about the quadrilateral.
By combining both the statements.
From statement 1: \(x + y = 180\)
From statement 2: One angle is \(60\), either \(x\) is \(60\) or \(y\) is \(60\).
By combining both the statements.
By substituting the value from statement 2 in statement 1 we can find whether any of the angles is \(90\) degrees or not.
Hence, the correct answer is Option C.
Note: - Ideally, we don’t need to do any calculation. By looking at statement 1 we can infer that the opposite angles are equal, and their sum is 360. If we know the value of any of the angles we can find the value of all the angles. In statement 2 value of one angle is given, which means we can find the value of all the angles. Hence the answer is Option C
18 Oct 2022, 13:05
Kudos
Bookmarks
Automated notice from GMAT Club BumpBot:
A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.
This post was generated automatically.
A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.
This post was generated automatically.
