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.
n is on odd positive integer 700<n<800
[#permalink]
19 May 2017, 01:15
19 May 2017, 01:15
2
Expert Reply
3
Bookmarks
00:00
Question Stats:
63% (00:50) correct
36% (00:46) wrong based on 197 sessions
Hide Show timer Statistics
n is an odd positive integer, and 700 < n < 800
Quantity A |
Quantity B |
The number of the prime factors of n |
The number of the prime factors of 2n |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: n is on odd positive integer 700<n<800
[#permalink]
26 May 2017, 12:33
26 May 2017, 12:33
7
Carcass wrote:
n is an odd positive integer, and 700 < n < 800
Quantity A |
Quantity B |
The number of the prime factors of n |
The number of the prime factors of 2n |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
KEY CONCEPT #1: Every factor of n is also a factor of 2n
So, EITHER n and 2n have the same number of prime factors OR 2n has more prime factors than n has.
In other words, the correct answer is either C or B
KEY CONCEPT #1: Since n is ODD, we can conclude that 2 (a prime number) is NOT a factor of n
Since 2n is EVEN, we can conclude that 2 IS a factor of 2n
Since 2 (a prime number) IS a factor of 2n but NOT a factor of n, we can see that 2n must have MORE prime factors than n has.
Answer:
Show: ::
B
Cheers,
Brent
General Discussion
Re: n is on odd positive integer 700<n<800
[#permalink]
10 Jun 2020, 23:23
10 Jun 2020, 23:23
1
r^6=32
A) 32 B)r^5
A greater
B greater
both same
relation cannot be find
A) 32 B)r^5
A greater
B greater
both same
relation cannot be find
