BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

perfect square

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 965
Joined: Thu Jan 28, 2010 12:52 am
Thanked: 156 times
Followed by:34 members
GMAT Score:720

by vineeshp » Thu May 26, 2011 2:48 am
Answer is B.



Stmt 1) 23<d<33
If d is 24
squares are 0,1,4,9,16 = 5

If d is 26
squares are 0,1,4,9,16,25.=6

Not sufficient.

Stmt 2) 27<d<37
If d is 28
squares are 0,1,4,9,16, 25

If d is 36
squares are 0,1,4,9,16,25.

Sufficient.
Vineesh,
Just telling you what I know and think. I am not the expert. :)
Top
User avatar
Legendary Member
Posts: 1309
Joined: Mon Apr 04, 2011 5:34 am
Location: India
Thanked: 310 times
Followed by:123 members
GMAT Score:750

by cans » Fri May 27, 2011 5:39 am
0 is counted??
i know its not relevant to this question but maybe in different one.....
Top
User avatar
Master | Next Rank: 500 Posts
Posts: 407
Joined: Tue Jan 25, 2011 9:19 am
Thanked: 25 times
Followed by:7 members

by Ozlemg » Fri May 27, 2011 6:57 am
I did not catch how B is sufficient when d is 36?

If d is 36
squares are 0,1,4,6,9,16,25. -->7 not 6 ?
Top
Junior | Next Rank: 30 Posts
Posts: 23
Joined: Mon May 16, 2011 2:41 pm
Location: India
GMAT Score:580

by breakkgmat » Fri May 27, 2011 12:04 pm
It says HOW MANY PERFECT SQUARES ARE LESS THAN THE INTEGER d?
So,if d is 36, the exactly 6 perfect squares less than d..if it would have said,how many less than equal to d then this answer world be a different one.
So, B is the answer.
Top
User avatar
Legendary Member
Posts: 1077
Joined: Mon Dec 13, 2010 1:44 am
Thanked: 118 times
Followed by:33 members
GMAT Score:710

by bblast » Sat May 28, 2011 11:11 am
cans wrote:0 is counted??
i know its not relevant to this question but maybe in different one.....
yes, 0 and 1 both are perfect squares :


source gmat club :

If x is an integer, what is the value of x ?

x^2 = x^3
x is both a perfect square and a perfect cube.

OA
Statement (1) by itself is insufficient. x can be 0 or 1.

Statement (2) by itself is insufficient. Perfect squares are integers 0, 1, 4, 9, 16, and so on. Similarly, perfect cubes are: 0, 1, 8, 27, 64... Thus x can be 0 or 1.

Statements (1) and (2) combined are insufficient. can still be 0 or 1. E
Cheers !!

Quant 47-Striving for 50
Verbal 34-Striving for 40

My gmat journey :
https://www.beatthegmat.com/710-bblast-s ... 90735.html
My take on the GMAT RC :
https://www.beatthegmat.com/ways-to-bbla ... 90808.html
How to prepare before your MBA:
https://www.youtube.com/watch?v=upz46D7 ... TWBZF14TKW_
Top
User avatar
Legendary Member
Posts: 1309
Joined: Mon Apr 04, 2011 5:34 am
Location: India
Thanked: 310 times
Followed by:123 members
GMAT Score:750

by cans » Sat May 28, 2011 11:21 am
thanks bblast :)
Top
Post new topic Post Reply
• Page 1 of 1