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Updated on: 27 Mar 2015, 04:56
Originally posted by monirjewel on 06 Nov 2010, 09:59.
Last edited by Bunuel on 27 Mar 2015, 04:56, edited 2 times in total.
Last edited by Bunuel on 27 Mar 2015, 04:56, edited 2 times in total.
Renamed the topic and edited the question.
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
92% (00:28) correct
8%
(00:39)
wrong
based on 1185
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What is the value of n?
(1) n is between 0 and 1
(2) 7/16 is 3/8 more than n
(1) n is between 0 and 1
(2) 7/16 is 3/8 more than n
Solving this question helps.
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Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
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09 Nov 2010, 06:45
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monirjewel
Statement 1: Obviously not sufficient.
Statement 2: 7/16 is 3/8 more than n so it means that 7/16 = 3/8 + n
You can get the value of n hence it is sufficient.
Answer (B)
The question was just trying to trick you to take statement 1 into consideration as well and mark the answer as (C). Obviously n is between 0 and 1 but you do not need to use that information, You anyway get the exact value of n from statement 2 alone.
And yes, it is sub 600 level question.
27 Sep 2020, 21:19
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What is the value of n?
(1) n is between 0 and 1 - Insufficient. n can be any number between 0 and 1.
(2) 7/16 is 3/8 more than n. 7/16=n+3/8 ---> n=7/16-3/8=1/16 Sufficient. Answer is B)
(1) n is between 0 and 1 - Insufficient. n can be any number between 0 and 1.
(2) 7/16 is 3/8 more than n. 7/16=n+3/8 ---> n=7/16-3/8=1/16 Sufficient. Answer is B)
28 Sep 2020, 01:46
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Forget the conventional way to solve DS questions.
We will solve this DS question using the variable approach.
DS question with 1 variable: Let the original condition in a DS question contain 1 variable. Now, 1 variable would generally require 1 equation for us to be able to solve for the value of the variable.We know that each condition would usually give us an equation and Since we need 1 equation to match the numbers of variables and equations in the original condition,the logical answer is D. The answer could be A, B or D, but the default answer will be D.
To master the Variable Approach, visit https://www.mathrevolution.com and check our lessons and proven techniques to score high in DS questions.
Let’s apply the 3 steps suggested previously. [Watch lessons on our website to master these 3 steps]
Step 1 of the Variable Approach: Modifying and rechecking the original condition and the question.
We have to find value of 'n'.
Second and the third step of Variable Approach: From the original condition, we have 1 variable (n).To match the number of variables with the number of equations, we need 1 equation. Since conditions (1) and (2) will provide 1 equation each, D would most likely be the answer.
Let’s take a look at each condition.
Condition(1) tells us that 0 < n < 1.
Since the answer is not unique, condition(1) is notsufficient by CMT 2.
Condition(2) tells us that \(7/16\) is \(3/8\) more than n.
=> \(\frac{7}{16}\) = \(\frac{3}{8}\) + n
=> n = \(\frac{7}{16}\) - \(\frac{3}{ 8}\) = \(\frac{1}{16}\)
Since the answer is unique, condition(2) is sufficient by CMT 2.
So, B is the correct answer.
Answer: B
We will solve this DS question using the variable approach.
DS question with 1 variable: Let the original condition in a DS question contain 1 variable. Now, 1 variable would generally require 1 equation for us to be able to solve for the value of the variable.We know that each condition would usually give us an equation and Since we need 1 equation to match the numbers of variables and equations in the original condition,the logical answer is D. The answer could be A, B or D, but the default answer will be D.
To master the Variable Approach, visit https://www.mathrevolution.com and check our lessons and proven techniques to score high in DS questions.
Let’s apply the 3 steps suggested previously. [Watch lessons on our website to master these 3 steps]
Step 1 of the Variable Approach: Modifying and rechecking the original condition and the question.
We have to find value of 'n'.
Second and the third step of Variable Approach: From the original condition, we have 1 variable (n).To match the number of variables with the number of equations, we need 1 equation. Since conditions (1) and (2) will provide 1 equation each, D would most likely be the answer.
Let’s take a look at each condition.
Condition(1) tells us that 0 < n < 1.
Since the answer is not unique, condition(1) is notsufficient by CMT 2.
Condition(2) tells us that \(7/16\) is \(3/8\) more than n.
=> \(\frac{7}{16}\) = \(\frac{3}{8}\) + n
=> n = \(\frac{7}{16}\) - \(\frac{3}{ 8}\) = \(\frac{1}{16}\)
Since the answer is unique, condition(2) is sufficient by CMT 2.
So, B is the correct answer.
Answer: B
