Hi Sharbel,
Q: Is tenths digit of n >7 ?
{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}
Its given data that n has to be a number between 3 and 4
Statement 2 looks easier.....go right to Statement 2:
n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)
If n= 3.69, the tengths digit = 6 .......(Is tenths digit of n >7 ? ---NO)
If n = 3.81, the tenths digit = 8........(Is tenths digit of n >7 ? ---YES)
Sometimes Yes and Sometimes NO = Insufficient.
Eliminate B and D
Statement 1:
n has to be 3. 5 or greater, since rounding it off leads to 4
Again we can have myriads of tenths digit values , so Insufficiency
Even if you combine the statements, we havent resolved the possiblity of the tenths digit of n being either larger than 7 or lesser than 7.
Therefore, my answer is E.
DS need answer and explanations please
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Source: Beat The GMAT — Data Sufficiency |
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Sharbel
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Thank you for the reply
My answer was also E, but unfortunately the practice test from Mc graw Hill says it is B "statemenet 2 alone is sufficient". i did not understand the reasoning behind it
what do you think ????
My answer was also E, but unfortunately the practice test from Mc graw Hill says it is B "statemenet 2 alone is sufficient". i did not understand the reasoning behind it
what do you think ????
Sharbel Nasr
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Stuart@KaplanGMAT
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Calculation police!Musiq wrote:Hi Sharbel,
Q: Is tenths digit of n >7 ?
{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}
Its given data that n has to be a number between 3 and 4
Statement 2 looks easier.....go right to Statement 2:
n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)
n > 4 - 0.28
n > 3.72
However, the answer remains the same, since the tenths digit could be 7, 8 or 9.
Is 7 > 7? NO
Is 8 > 7? YES
Statement (1) doesn't add anything, so the correct answer should be (e).
Are you sure that the original question didn't ask:
Is the tenths digit of n >= 7?
If that were the question, then (b) would in fact be the correct answer.
Stuart Kovinsky | Kaplan GMAT Faculty | Toronto
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Sharbel
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i double checked the question and it does not mention anything about equality to 7, but the answer says it is B ( 1 is insuffiecient because n could be 3.6 or 3.8 ) ( 2 is sufficient becuase the only way this statment is true is if n>3.72)
now this does not make sense for me, since it can be greater than 3.72, n can simply be 3.73 and the tenths digit is =7 or n could be equal to 3.8 and the tenths digit is 8. So the answer is E
do you think if we found a mistake in the Mcgraw hill book they would refund us the money we paid for it ???
now this does not make sense for me, since it can be greater than 3.72, n can simply be 3.73 and the tenths digit is =7 or n could be equal to 3.8 and the tenths digit is 8. So the answer is E
do you think if we found a mistake in the Mcgraw hill book they would refund us the money we paid for it ???
Sharbel Nasr
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Musiq
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Stuart Kovinsky wrote:Calculation police!Musiq wrote:Hi Sharbel,
Q: Is tenths digit of n >7 ?
{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}
Its given data that n has to be a number between 3 and 4
Statement 2 looks easier.....go right to Statement 2:
n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)
n > 4 - 0.28
n > 3.72
You sir are right.
Au contraire, I am totally wrong.
For love, not money.
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Musiq
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No problem.Sharbel wrote:we all make mistakes, its all part of the learning process.
By the way, my test is tomorrow at noon, when is yours ?
Bonne chance et merci beaucoup 8)
Good luck to you too!
I am taking the test sometime in Septemeber. My deadlines are for PhD programs, so I am all good.
Again, good luck on your test....cant wait to hear your success story.
For love, not money.
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Sharbel
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Hey there,
i just got back from the test, 640 is the unofficial score. i made a fatal mistake and lost track of the time in the quantitative, i left 4 questions unanswered which shot down my quant score to 57%, but the verbal was good 84%.
I think the final score should be a bit higher, they should add the AWA points and i think it is about 650, enough to get me in the program i want.
Wish you all the best and good luck on your test, let me know when you get your scores.
A bientot
i just got back from the test, 640 is the unofficial score. i made a fatal mistake and lost track of the time in the quantitative, i left 4 questions unanswered which shot down my quant score to 57%, but the verbal was good 84%.
I think the final score should be a bit higher, they should add the AWA points and i think it is about 650, enough to get me in the program i want.
Wish you all the best and good luck on your test, let me know when you get your scores.
A bientot
Sharbel Nasr
