Last visit was: 14 Nov 2024, 12:52 It is currently 14 Nov 2024, 12:52
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

Which of the following could be the perimeter of an isos

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 29960
Own Kudos [?]: 36219 [6]
Given Kudos: 25903
Send PM
Which of the following could be the perimeter of an isos [#permalink] New post   21 Oct 2020, 10:15
Expert Reply
6
Bookmarks
00:00

Question Stats:

31% (00:47) correct 68% (00:45) wrong based on 76 sessions

Hide Show timer Statistics

Which of the following could be the perimeter of an isosceles triangle if one side has length 3 inches and another side has length 7 inches?


Indicate all possible perimeters.

A. 9 inches

B. 11 inches

C. 13 inches

D. 15 inches

E. 17 inches

F. 19 inches



Source: 320 GRE Math Questions
ShowHide Answer
Official Answer
E
User avatar
B
Pranaygre
Retired Moderator
Joined: 09 Jun 2020
Posts: 205
Own Kudos [?]: 235 [2]
Given Kudos: 34
GPA: 3.21
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   21 Oct 2020, 20:16
2
sir once check the answers only 17 should be the answer
given isosceles triangle one side has length 3 inches and another side has length 7 inches

if the third side is 3 then 3+3<7 here property of triangle is not satisfied

third side must be 7 only so perimeter =7+7+3=17

option E is correct
avatar
Olasunbo
Manager
Manager
Joined: 08 Aug 2020
Posts: 92
Own Kudos [?]: 108 [0]
Given Kudos: 0
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   25 Oct 2020, 05:06
1
The third side is 7-3=4 or 7+3=10

Since the third side is greater than the shortest side then the third side can either be 7 then we have 7,7,3 triangle or 3,3,7 triangle since it's an isosceles triangle.

Hence CE

Posted from my mobile device Image
avatar
B
endurance
Manager
Manager
Joined: 06 Nov 2020
Posts: 85
Own Kudos [?]: 69 [0]
Given Kudos: 101
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   09 Nov 2020, 23:22
I did not notice that it is said about an isosceles triangle. My mistake
avatar
B
eldorado21
Manager
Manager
Joined: 26 Nov 2020
Posts: 110
Own Kudos [?]: 102 [1]
Given Kudos: 31
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   30 Jan 2021, 19:42
1
3,3,7 is not valid triangle dimensions as someone pointed out above. So shouldn't E be only correct answer?
avatar
S
COolguy101
Senior Manager
Senior Manager
Joined: 23 Jan 2021
Posts: 294
Own Kudos [?]: 170 [1]
Given Kudos: 81
Concentration: , International Business
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   03 Jun 2021, 23:11
1
Carcass sir, please update OA. Answer C cannot be the right answer as it does not satisfy the triangle basic property that sum of smaller two side must be greater than larger one.
User avatar
D
KarunMendiratta
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Own Kudos [?]: 3220 [2]
Given Kudos: 172
Location: India
WE:Education (Education)
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   04 Jun 2021, 00:56
1
1
Bookmarks
Carcass wrote:
Which of the following could be the perimeter of an isosceles triangle if one side has length 3 inches and another side has length 7 inches?


Indicate all possible perimeters.

A. 9 inches

B. 11 inches

C. 13 inches

D. 15 inches

E. 17 inches

F. 19 inches



Source: 320 GRE Math Questions


Positive difference of other 2 sides < Third sides < Sum of other 2 sides

Case I:
3 - 3 < 7 < 3 + 3
0 < 7 < 6

Not valid - So perimeter cannot be 13

Case II:
7-7 < 3 < 7 + 7
0 < 3 < 14

A valid case - So perimeter can be 17

Hence, option E only
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 29960
Own Kudos [?]: 36219 [0]
Given Kudos: 25903
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   04 Jun 2021, 01:05
Expert Reply
KarunMendiratta wrote:
Carcass wrote:
Which of the following could be the perimeter of an isosceles triangle if one side has length 3 inches and another side has length 7 inches?


Indicate all possible perimeters.

A. 9 inches

B. 11 inches

C. 13 inches

D. 15 inches

E. 17 inches

F. 19 inches



Source: 320 GRE Math Questions


Positive difference of other 2 sides < Third sides < Sum of other 2 sides

Case I:
3 - 3 < 7 < 3 + 3
0 < 7 < 6

Not valid - So perimeter cannot be 13

Case II:
7-7 < 3 < 7 + 7
0 < 3 < 14

A valid case - So perimeter can be 17

Hence, option E only


Thank you Sir

The book was clearly wrong
User avatar
bumpbot
GRE Prep Club Legend
GRE Prep Club Legend
Joined: 07 Jan 2021
Posts: 5014
Own Kudos [?]: 74 [0]
Given Kudos: 0
Send PM
Re: Which of the following could be the perimeter of an isos [#permalink] New post   04 Jul 2024, 13:08
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Prep Club for GRE Bot
gmatclubot
Re: Which of the following could be the perimeter of an isos [#permalink]
04 Jul 2024, 13:08
Moderators:
adewale223
GRE Instructor
78 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1111 posts
VibhuAnurag
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact