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
For all positive integers m, [m] = 3m when m is odd and [m] = (1/2)*m
[#permalink]
27 Jun 2022, 20:23
27 Jun 2022, 20:23
Expert Reply
1
Bookmarks
00:00
Question Stats:
44% (00:43) correct
55% (01:05) wrong based on 9 sessions
Hide Show timer Statistics
For all positive integers m, [m] = 3m when m is odd and [m] = (1/2)m when m is even. What is [9]x[6] equivalent to?
A. [81]
B. [54]
C. [37]
D. [27]
E. [18]
A. [81]
B. [54]
C. [37]
D. [27]
E. [18]
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
For all positive integers m, [m] = 3m when m is odd and [m] = (1/2)*m
[#permalink]
28 Jun 2022, 06:27
28 Jun 2022, 06:27
2
GeminiHeat wrote:
For all positive integers m, [m] = 3m when m is odd and [m] = (1/2)m when m is even. What is [9]x[6] equivalent to?
A. [81]
B. [54]
C. [37]
D. [27]
E. [18]
A. [81]
B. [54]
C. [37]
D. [27]
E. [18]
9 is odd, so [9] = (3)(9) = 27
6 is even, so [6] = 6/2 = 3
So, [9] x [6] = 27 x 3 = 81
BEFORE you select answer choice A, notice that 81 has brackets around it.
Since 81 is odd, [81] = (3)(81) = 243
So, answer choice A is NOT correct.
So, which of the 5 answer choices equals 81?
Since 27 is odd, [27] = (3)(27) = 81
So, the correct answer is D
Cheers,
Brent
gmatclubot
For all positive integers m, [m] = 3m when m is odd and [m] = (1/2)*m [#permalink]
28 Jun 2022, 06:27
Moderators:
