Last visit was: 12 Nov 2024, 12:12 It is currently 12 Nov 2024, 12:12

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.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 29944
Own Kudos [?]: 36204 [16]
Given Kudos: 25902
Send PM
Most Helpful Community Reply
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12186 [18]
Given Kudos: 136
Send PM
General Discussion
avatar
Intern
Intern
Joined: 05 Dec 2018
Posts: 9
Own Kudos [?]: 5 [0]
Given Kudos: 0
Send PM
avatar
Intern
Intern
Joined: 12 Aug 2019
Posts: 2
Own Kudos [?]: 0 [0]
Given Kudos: 5
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
Sir, If you solved this problem in another way it will be easy for me to absorve it.
Verbal Expert
Joined: 18 Apr 2015
Posts: 29944
Own Kudos [?]: 36204 [0]
Given Kudos: 25902
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
Expert Reply
Hi Mithun

I do not think to solve such problem with algebra (which is the alternative method) rather than visualization will be easier :(
avatar
Intern
Intern
Joined: 06 Apr 2020
Posts: 10
Own Kudos [?]: 9 [0]
Given Kudos: 0
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
Hey how can we take the ratio of upper limits to find the probability ?

Originally posted by skythelimit on 06 Apr 2020, 20:10.
Last edited by skythelimit on 07 Apr 2020, 12:58, edited 1 time in total.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12186 [0]
Given Kudos: 136
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
1
skythelimit wrote:
Hey how can me take the ratio of upper limits to find the probability ?


Can you please elaborate?
I'm not how that strategy will help. It's certainly beyond the scope of the GRE.
avatar
Manager
Manager
Joined: 01 Jan 2020
Posts: 114
Own Kudos [?]: 87 [2]
Given Kudos: 0
Concentration: Marketing
Schools: Copenhagen Business School - Class of 2022
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
2
My approach.

calculating the circumference: 4π

Following this I try to determine in how many pieces I would need to "slice up" to get the equivalent 2 cm chords to 4π.

following this I go 4π/x =2-->yielding back 6,28-->rounding it up I assume it is 6, since 4π/6 =2,0933-->meaning I would need 6 pieces

Now since we know that it is random where the two fall, we can make our own starting point of some sort.

Following upon this I imagine we have point 0. Looking counterclockwise and clockwise we get the 2cm chord distance twice.

Since we know that we have "two pieces" out of the 6 that yield back 2cm-->we divide 2/6 =1/3 the probability that we get 2cm

Since we are looking for the opposite, the probability of not getting a chord that is less than 2cm, we have 2/3 probability

Please advise if mistaken
User avatar
GRE Prep Club Legend
GRE Prep Club Legend
Joined: 07 Jan 2021
Posts: 5008
Own Kudos [?]: 74 [0]
Given Kudos: 0
Send PM
Re: If points A and B are randomly placed on the circumference o [#permalink]
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
Re: If points A and B are randomly placed on the circumference o [#permalink]
Moderators:
GRE Instructor
78 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

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