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.
If n=13x15x17x19 Which number, if changed, would least affe
[#permalink]
01 Jan 2022, 20:30
01 Jan 2022, 20:30
00:00
Question Stats:
25% (00:20) correct
75% (01:00) wrong based on 4 sessions
Hide Show timer Statistics
If n=13x15x17x19
Which number, if changed, would least affect the value of n?
A. 13
B. 15
C. 17
D. 19
E. None of the above
Posted from my mobile device
Which number, if changed, would least affect the value of n?
A. 13
B. 15
C. 17
D. 19
E. None of the above
Posted from my mobile device
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: If n=13x15x17x19 Which number, if changed, would least affe
[#permalink]
02 Jan 2022, 07:06
02 Jan 2022, 07:06
1
1
Bookmarks
Sumukh19 wrote:
If n=13x15x17x19
Which number, if changed, would least affect the value of n?
A. 13
B. 15
C. 17
D. 19
E. None of the above
Posted from my mobile device
Which number, if changed, would least affect the value of n?
A. 13
B. 15
C. 17
D. 19
E. None of the above
Posted from my mobile device
This question seems a little bit ambiguous, since we're not told anything about the manner in which a number is changed.
That said let's add 1 to each of the four values, and see what effect the change has on the value of n.
Add 1 to 13 to get: n = (13 + 1)(15)(17)(19)
Expand to get: n = (13)(15)(17)(19) + (1)(15)(17)(19)
In this case, the value of n increases by (1)(15)(17)(19)
Add 1 to 15 to get: n = (13)(15 + 1)(17)(19)
Expand to get: n = (13)(15)(17)(19) + (1)(13)(17)(19)
In this case, the value of n increases by (1)(13)(17)(19)
Add 1 to 17 to get: n = (13)(15)(17 + 1)(19)
Expand to get: n = (13)(15)(17)(19) + (1)(13)(15)(19)
In this case, the value of n increases by (1)(13)(15)(19)
Add 1 to 19 to get: n = (13)(15)(17)(19 + 1)
Expand to get: n = (13)(15)(17)(19) + (1)(13)(15)(17)
In this case, the value of n increases by (1)(13)(15)(17)
Among the four products in red, smallest value is (1)(13)(15)(17), which means adding 1 to 19 will have the least effect on the value of n.
Answer: D
gmatclubot
Re: If n=13x15x17x19 Which number, if changed, would least affe [#permalink]
02 Jan 2022, 07:06
Moderators:
