GRE Prep 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.
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
The table above is a 3 by 3 grid of 9 numbers, 5 of which are given. T
[#permalink]
02 Jan 2023, 11:15
02 Jan 2023, 11:15
1
Expert Reply
1
Bookmarks
00:00
Question Stats:
66% (01:16) correct
33% (02:54) wrong based on 3 sessions
Hide Show timer Statistics
The table above is a 3 by 3 grid of 9 numbers, 5 of which are given. The 4 numbers that are not given are denoted by A, B, C, and D. The product of the numbers in each row and in each column is the same for all rows and columns. What is the value of the product ABCD?
A) 36
B) 72
C) \(36\sqrt{2}\)
D) \(36\sqrt{3}\)
E) \(72\sqrt{6}\)
Show: ::
Attachment:
Table.jpg [ 4.08 KiB | Viewed 1530 times ]
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: The table above is a 3 by 3 grid of 9 numbers, 5 of which are given. T
[#permalink]
05 Jan 2023, 10:05
05 Jan 2023, 10:05
1
Expert Reply
From Second column we see that the multiplication for each row/columns should be \(= 6 * \sqrt{6}\)
\(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(AB * \sqrt{3}\) \(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(AB = 6 * \sqrt{2}\)
\(CD * 2\sqrt{3}\) \(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(CD = 3 * \sqrt{2}\)
\(AB * CD = 6 * \sqrt{2} * 3 * \sqrt{2}\)
\(AB * CD = 18 * 2\)
\(AB * CD = 36\)
Answer: A
\(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(AB * \sqrt{3}\) \(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(AB = 6 * \sqrt{2}\)
\(CD * 2\sqrt{3}\) \(= 2 * 3 * \sqrt{3} * \sqrt{2}\)
\(CD = 3 * \sqrt{2}\)
\(AB * CD = 6 * \sqrt{2} * 3 * \sqrt{2}\)
\(AB * CD = 18 * 2\)
\(AB * CD = 36\)
Answer: A
gmatclubot
Re: The table above is a 3 by 3 grid of 9 numbers, 5 of which are given. T [#permalink]
05 Jan 2023, 10:05
Moderators:
