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

 It is currently 15 Oct 2019, 01:58

### 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

# What is the value of n?

Author Message
TAGS:

### Hide Tags

Retired Moderator
Joined: 27 Oct 2017
Posts: 1256
Location: India
GPA: 3.64
WE: Business Development (Energy and Utilities)
What is the value of n?  [#permalink]

### Show Tags

01 Nov 2018, 07:54
1
00:00

Difficulty:

5% (low)

Question Stats:

93% (00:28) correct 7% (00:56) wrong based on 57 sessions

### HideShow timer Statistics

What is the value of n?

(1) $$\sqrt{n}$$ = 2

(2) $$\sqrt{4n}$$ = 4

_________________
Intern
Joined: 26 Mar 2015
Posts: 10
Re: What is the value of n?  [#permalink]

### Show Tags

04 Nov 2018, 03:18
Squaring both statement will fetch n=4 hence D
examPAL Representative
Joined: 07 Dec 2017
Posts: 1140
Re: What is the value of n?  [#permalink]

### Show Tags

04 Nov 2018, 07:31
We can solve this logically, without any calculation: both statements present an equation with one variable - a solution is definitely possible. they are both sufficient!

If we want to go the Precise route, and actually calculate, we can:

gmatbusters wrote:

(1) $$\sqrt{n}$$ = 2

We'll raise both sides to the power of 2: n = 4 - that's our answer. Sufficient! B, C and E are eliminated!

gmatbusters wrote:

(2) $$\sqrt{4n}$$ = 4

We'll raise both sides to the power of 2: 4n = 16 ==> n = 4 - that's our answer. Sufficient! A is eliminated. Answer D.
_________________
Intern
Joined: 10 May 2018
Posts: 34
Re: What is the value of n?  [#permalink]

### Show Tags

10 Nov 2018, 23:13
gmatbusters wrote:
What is the value of n?

(1) $$\sqrt{n}$$ = 2

(2) $$\sqrt{4n}$$ = 4

Statement 1: squaring both sides, we get n=4. Sufficient.
Statement 2: squaring both sides, we again get n=4. Sufficient.

VP
Joined: 31 Oct 2013
Posts: 1472
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: What is the value of n?  [#permalink]

### Show Tags

16 Nov 2018, 10:57
gmatbusters wrote:
What is the value of n?

(1) $$\sqrt{n}$$ = 2

(2) $$\sqrt{4n}$$ = 4

we are looking for the value of n.

statement 1: $$\sqrt{n}$$ = 2 = n = 4. Sufficient. to get the value of n , square both sides of the equation.

Statement 2: $$\sqrt{4n}$$ = 4 = n=4. The same as 1.

Re: What is the value of n?   [#permalink] 16 Nov 2018, 10:57
Display posts from previous: Sort by