GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 18 Jun 2019, 00:59

### 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

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

# [Math Revolution] Practice "Math Questions of the Day"

Author Message
Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 7462
GMAT 1: 760 Q51 V42
GPA: 3.82
[Math Revolution] Practice "Math Questions of the Day"  [#permalink]

### Show Tags

25 Dec 2018, 21:09
To help you sharpen your math skills and hit your target score of Q49-51, we are sending you 4 math questions (2 DS, 2 PS) and solutions regularly.
These questions are the types of questions appearing in GMAT exam frequently.

Attachment:

Math Revolution Questions.png [ 239.3 KiB | Viewed 217 times ]

_________________
MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only \$149 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
CEO
Joined: 18 Aug 2017
Posts: 3866
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
[Math Revolution] Practice "Math Questions of the Day"  [#permalink]

### Show Tags

Updated on: 31 Dec 2018, 20:06
MathRevolution

hi in the 2nd DS no property question, in the first statement you have said in solution that if 0 is taken the statement stands not sufficient..
Please correct me if i am wrong , but '0' is neither a +ve or - ve integer ; and also in the question stem its given that n is a +ve integer ; so why '0' has been taken?
'0' could have been considered if the question stem said that n is an integer or a non +ve or non -ve integer .. but in this case it specifically says +ve integer which IMO '0' should not to be tested to check validity of the statements..

Positive and Negative
Definition: A positive number is a real number that is greater than zero. A negative number is a real number that is smaller than zero.
Zero is not positive, nor negative.

Property about '0' ; its an even integer but its neither +ve or -ve..

IMO B should be correct option
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.

Originally posted by Archit3110 on 26 Dec 2018, 04:14.
Last edited by Archit3110 on 31 Dec 2018, 20:06, edited 1 time in total.
Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 7462
GMAT 1: 760 Q51 V42
GPA: 3.82
Re: [Math Revolution] Practice "Math Questions of the Day"  [#permalink]

### Show Tags

31 Dec 2018, 09:49
Archit3110 wrote:
MathRevolution

hi in the 2nd DS no property question, in the first statement you have said in solution that if 0 is taken the statement stands not sufficient..
Please correct me if i am wrong , but '0' is neither a +ve or - ve integer ; and also in the question stem its given that n is a +ve integer ; so why '0' has been taken?
'0' could have been considered if the question stem said that n is an integer or a non +ve or non -ve integer .. but in this case it specifically says +ve integer which IMO '0' should not to be tested to check validity of the statements..

Positive and Negative
Definition: A positive number is a real number that is greater than zero. A negative number is a real number that is smaller than zero.
Zero is not positive, nor negative.

Property about '0' ; its an even integer but its neither +ve or -ve..

IMO D should be correct option

Oh, you are right.
n shouldn't be zero. The solution should be fixed in the following way.

If n = 2, then 3^4 + 3^{n+4} = 3^4 + 3^6 = 81 + 729 = 810, and the answer is 'yes'.
If n = 4, then 3^4 + 3^{n+4} = 3^4 + 3^8 = 81 + 6561 = 6642, and the answer is 'no'.

The answer would be fixed soon.
_________________
MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only \$149 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
Re: [Math Revolution] Practice "Math Questions of the Day"   [#permalink] 31 Dec 2018, 09:49
Display posts from previous: Sort by

# [Math Revolution] Practice "Math Questions of the Day"

Moderator: souvonik2k