It is currently 21 Oct 2017, 14:58

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

VP
Joined: 14 Nov 2016
Posts: 1174

Kudos [?]: 1183 [0], given: 415

Location: Malaysia
Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in [#permalink]

### Show Tags

23 Mar 2017, 18:11
00:00

Difficulty:

25% (medium)

Question Stats:

72% (00:52) correct 28% (01:05) wrong based on 57 sessions

### HideShow timer Statistics

Is $$√p$$ a non-integer?

(1) $$p = r × 10^r$$, where r is a positive odd integer.
(2) $$p = 9 × 10^s$$, where s is a positive integer.
[Reveal] Spoiler: OA

_________________

"Be challenged at EVERY MOMENT."

“Strength doesn’t come from what you can do. It comes from overcoming the things you once thought you couldn’t.”

"Each stage of the journey is crucial to attaining new heights of knowledge."

Rules for posting in verbal forum | Please DO NOT post short answer in your post!

Kudos [?]: 1183 [0], given: 415

Director
Joined: 05 Mar 2015
Posts: 964

Kudos [?]: 287 [0], given: 41

Re: Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in [#permalink]

### Show Tags

23 Mar 2017, 19:10
avinsethi wrote:
A?

Sent from my ONEPLUS A3003 using GMAT Club Forum mobile app

Yes its A...

(1) 10^odd integer is never a square .
HEre r is odd integer.

suff.

(2) we dont have enough info of s (even /odd).
if s=even then YES
if s=odd then NO
insuff

Ans A

Kudos [?]: 287 [0], given: 41

VP
Joined: 26 Mar 2013
Posts: 1262

Kudos [?]: 286 [0], given: 163

Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in [#permalink]

### Show Tags

23 Mar 2017, 19:20
Is $$√p$$ a non-integer?

(1) $$p = r × 10^r$$, where r is a positive odd integer.

Let r= 1..........$$√10$$...........Answer is yes

Let r= 3..........$$√10^3$$...........Answer is yes

Any ODD power will yield always NON-Integer number

Sufficient

(2) $$p = 9 × 10^s$$, where s is a positive integer.

Let s= 1..........$$√9*10$$...........Answer is yes

Let s= 2..........$$√9*10^2$$...........Answer is No

Insufficient

Kudos [?]: 286 [0], given: 163

Director
Joined: 12 Nov 2016
Posts: 784

Kudos [?]: 35 [0], given: 164

Re: Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in [#permalink]

### Show Tags

25 Sep 2017, 18:17
hazelnut wrote:
Is $$√p$$ a non-integer?

(1) $$p = r × 10^r$$, where r is a positive odd integer.
(2) $$p = 9 × 10^s$$, where s is a positive integer.

Statement 1

In order for the square root of p to be an integer there must be an even number of exponents in the factors of p squared- for example

100 = 5^2 * 2^2
64= 2^6
9= 3^2

suff

Statement 2

Too many possibilities- it is not known whether or not s is odd

insuff

A

Kudos [?]: 35 [0], given: 164

Re: Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in   [#permalink] 25 Sep 2017, 18:17
Display posts from previous: Sort by

# Is √p a non-integer? (1) p = r × 10 r, where r is a positive odd in

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.