What is the value of n?

Question

(1) n is between 0 and 1
(2) 7/16 is 3/8 more than n

KarishmaB · Accepted Answer

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.

gmatcafe · Answer

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)

MathRevolution · Answer

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

CrushTheQuant · Answer

On data sufficiency question, its very important to erase statement (1) from your mind when you first look at statement (2). This question is almost designed to trick you.

Here's an explanation on YouTube:

https://www.youtube.com/watch?v=AoQwTWz ... KjqpAY5r-U

Answer (B)

bumpbot · Answer

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What is the value of n?

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GMAT Data Sufficiency (DS) Questions

What is the value of n?

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