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25 Dec 2018, 21:09
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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.
Please Click the link for solutions.
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These questions are the types of questions appearing in GMAT exam frequently.
Please Click the link for solutions.
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Math Revolution Questions.png [ 239.3 KiB | Viewed 1343 times ]
Archit3110
Major Poster
Updated on: 31 Dec 2018, 20:06
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.
Last edited by Archit3110 on 31 Dec 2018, 20:06, edited 1 time in total.
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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
Kindly advise..
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
Kindly advise..
31 Dec 2018, 09:49
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Archit3110
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.
