Last visit was: 21 May 2024, 19:55 It is currently 21 May 2024, 19:55
Close
GMAT 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 GMAT 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
SORT BY:
Date
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 93373
Own Kudos [?]: 625659 [0]
Given Kudos: 81918
Send PM
Manager
Manager
Joined: 23 Jan 2024
Posts: 109
Own Kudos [?]: 26 [0]
Given Kudos: 17
Send PM
Intern
Intern
Joined: 28 Jul 2022
Posts: 36
Own Kudos [?]: 41 [0]
Given Kudos: 101
Send PM
Intern
Intern
Joined: 12 Apr 2024
Posts: 7
Own Kudos [?]: 10 [0]
Given Kudos: 17
Location: India
Send PM
Re: Quant Question of the Day Chat [#permalink]
devashish2407 wrote:
https://gmatclub.com/forum/for-integers ... 29065.html Can anyone help me with this question?

I think the answer should be A, however they say that’s incorrect.

b and d both are integers so both can only be equal to 1 or -1 if bd=1 so c=a, sufficient. However, b+d=3 is insufficient , we can check this with examples , b = 4 d =-1 , b+d =3 and b>d so c>a. But if b=1 and d=2, b+d = 3 but b<d so c<a. Please let me know if I missed something.
Manager
Manager
Joined: 12 Apr 2023
Posts: 53
Own Kudos [?]: 14 [0]
Given Kudos: 44
Location: India
Schools: ESSEC (A)
GPA: 3.68
Send PM
Re: Quant Question of the Day Chat [#permalink]
devashish2407 wrote:
https://gmatclub.com/forum/for-integers ... 29065.html Can anyone help me with this question?

I think the answer should be E as both statement together doesnot give any concrete information about the relation between a and c even if we substitute the value of the respective numbers b and d

from (i) we get b = 1/d
or (b^2) = c/a (so we are not sure about the value of c/a which could be a fraction or a whole number (NOT sufficient)
from. (ii) we get b = 3-d
on substituting we get c/a = d/(3-d) which also doesn’t give a concrete value as the value of d is decisive (NOT sufficient)

On combining both we cannot find any exact value of d which could suffice a single condition

therefore both together not sufficient (E) should be the answer
Manager
Manager
Joined: 23 Jan 2024
Posts: 109
Own Kudos [?]: 26 [0]
Given Kudos: 17
Send PM
Re: Quant Question of the Day Chat [#permalink]
but the question mentions that it is an integer

so it cannot be a fraction
Intern
Intern
Joined: 12 Jul 2023
Posts: 30
Own Kudos [?]: 25 [0]
Given Kudos: 5
Send PM
Re: Quant Question of the Day Chat [#permalink]
The answer to above question is E only as correctly described by u guys.

I have a generic question. Is there any relationship between AM, GM, HM, mean and median?

U can decide the case/ situation and illustrate your opinion.
Manager
Manager
Joined: 23 Jan 2024
Posts: 109
Own Kudos [?]: 26 [0]
Given Kudos: 17
Send PM
Re: Quant Question of the Day Chat [#permalink]
Yes, we have many questions on relationships between mean and median

and mode even sometimes

depending on question, any kind of relationship can be drawn out, but I have attempted multiple questions with mean, median and mode, specially in D.S
Intern
Intern
Joined: 12 Jul 2023
Posts: 30
Own Kudos [?]: 25 [0]
Given Kudos: 5
Send PM
Re: Quant Question of the Day Chat [#permalink]
That’s great 👍. However, my question was on broader aspect.
Is there any relationship between AM GM HM mean and median

AM means arithmetic mean, G is geometric mean etc
Intern
Intern
Joined: 26 Mar 2020
Posts: 16
Own Kudos [?]: 9 [0]
Given Kudos: 13
Send PM
Re: Quant Question of the Day Chat [#permalink]
Harmonic Progression is rarely ever tested on GMAT, atleast I’ve not seen in over 2 years

One relation that comes to mind is, "If numbers are in AP, then Mean = Median"
Manager
Manager
Joined: 23 Jan 2024
Posts: 109
Own Kudos [?]: 26 [0]
Given Kudos: 17
Send PM
Re: Quant Question of the Day Chat [#permalink]
That is the one I was talking about too
Founder
Founder
Joined: 04 Dec 2002
Posts: 37464
Own Kudos [?]: 73307 [0]
Given Kudos: 19002
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3
Send PM
Re: Quant Question of the Day Chat [#permalink]
Expert Reply
gmat_app1096 wrote:
Harmonic Progression is rarely ever tested on GMAT, atleast I’ve not seen in over 2 years

It is not tested. You do not need to know the concept of harmonic mean Based on the questions I have seen.

I stand corrected. Apparently the new gym has focus does test harmonic mean 🥴

the-harmonic-mean-of-n-numbers-is-the-reciprocal-of-the-arithmetic-416989.html

I stand corrected. GMAT focus tests harmonic mean - above is an example from GMAT prep.

As was pointed out, I also have not seen it brought up much in the past.
Intern
Intern
Joined: 03 Oct 2023
Posts: 6
Own Kudos [?]: 2 [0]
Given Kudos: 4
Send PM
Re: Quant Question of the Day Chat [#permalink]
How to solve these questions with common root
Manager
Manager
Joined: 18 Feb 2024
Posts: 60
Own Kudos [?]: 32 [0]
Given Kudos: 131
Send PM
Re: Quant Question of the Day Chat [#permalink]
Sidharth11 wrote:
How to solve these questions with common root

I got -1

E1) 3x^2 +ax +1=0
E2) 2 x^2 +bx +1=0

(E1 )- (E2) —-> x^2 +(a-b)x=0
—-> x=b-a
X found in (E1)
3(b-a)^2 + a(b-a) +1 =0
2a^2 -5ab+3b^2 +1= 0
2a^2 -5ab+3b^2 =-1
MBA Section Director
Joined: 22 Feb 2012
Affiliations: GMAT Club
Posts: 8724
Own Kudos [?]: 10069 [0]
Given Kudos: 4547
Test: Test
Send PM
Re: Quant Question of the Day Chat [#permalink]
Expert Reply
Sunday GMAT Quiz Starts at 10:30am ET / 9pm IST - Solve 30 Challenging Questions with Peers in Timed Conditions redirect.php?id=4zcwm3aon1
Manager
Manager
Joined: 23 Jan 2024
Posts: 109
Own Kudos [?]: 26 [0]
Given Kudos: 17
Send PM
Re: Quant Question of the Day Chat [#permalink]
Hey will a recording be available of this
Intern
Intern
Joined: 16 Mar 2023
Posts: 47
Own Kudos [?]: 30 [0]
Given Kudos: 28
Send PM
Re: Quant Question of the Day Chat [#permalink]
This one is on Youtube. So, the video should be accessible at the same link post the live session.
Intern
Intern
Joined: 30 Sep 2023
Posts: 11
Own Kudos [?]: 12 [0]
Given Kudos: 112
Send PM
Re: Quant Question of the Day Chat [#permalink]
HarshR9 wrote:
This one is on Youtube. So, the video should be accessible at the same link post the live session.

not if they decide to make it private later
Intern
Intern
Joined: 16 Mar 2023
Posts: 47
Own Kudos [?]: 30 [0]
Given Kudos: 28
Send PM
Re: Quant Question of the Day Chat [#permalink]
Of course. Doesn’t typically happen though - making private is an exception rather than the rule, in this case (other such videos are still accessible).
Intern
Intern
Joined: 20 Nov 2022
Posts: 7
Own Kudos [?]: 6 [0]
Given Kudos: 87
Location: India
Concentration: Operations, Sustainability
Send PM
Re: Quant Question of the Day Chat [#permalink]
Can someone please help with this solution
GMAT Club Bot
Re: Quant Question of the Day Chat [#permalink]
   1  ...  223   224   225   226   227  ...  239   
Moderator:
Math Expert
93373 posts