To everyone out there: this is good practice I got : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 18 Jan 2017, 07:18

### 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
Your Progress

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

# To everyone out there: this is good practice I got

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 144 [0], given: 0

To everyone out there: this is good practice I got [#permalink]

### Show Tags

01 Aug 2003, 15:29
00:00

Difficulty:

(N/A)

Question Stats:

100% (03:13) correct 0% (00:00) wrong based on 6 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

To everyone out there: this is good practice

I got the right answers but you have to be fast.

Which of the following could be the exact value of n^4, where n is an integer?

1) 1.6 * 10 ^23
2) 1.6 * 10 ^ 21
3) 1.6 * 10 ^ 22
4) 1.6 * 10 ^23
5) 1.6 * 10 ^24

If s(t^3)(u^4)>0, then which of the following is positive

1) ST
2) SU
3) TU
4) STU
5) st^2
_________________

Ride em cowboy

Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

### Show Tags

02 Aug 2003, 07:27
1. 1.6 * 10 ^ 21
= 16 * 10^20
= 2^4 * (10^5)^4
= (2*10^5)^4

2. Did not understand the question
Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 144 [0], given: 0

Hi [#permalink]

### Show Tags

02 Aug 2003, 07:42
1) is not right. Even the 49ers club can slip up every now and then. Keep trying.

2) Which of the following is positive, sorry
_________________

Ride em cowboy

Director
Joined: 03 Jul 2003
Posts: 652
Followers: 3

Kudos [?]: 91 [0], given: 0

### Show Tags

03 Aug 2003, 16:03
I didn't understand question 1. Can anyone tell me, what the
question is asking for?
Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

### Show Tags

04 Aug 2003, 07:29
VT,

When I wrote (1), I meant the first part of the problem. If you see the expression, you will see that my choice was #2 (1.6 * 10 ^ 21).

KPadma,
It is asking for the expression which can be formatted in the form of n^4, where n is a integer. You will see why expression#2 (1.6 * 10 ^ 21) can be formatted into that form.
Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 144 [0], given: 0

### Show Tags

04 Aug 2003, 07:40
I can't take the test for you. Think about it prakunda, get back to me on my circumference problem the overlapping arc.

( x ) ^ 4
It cannot be one.
_________________

Ride em cowboy

Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

### Show Tags

04 Aug 2003, 08:47
VT,

Soory I confused you. The correct choice for the first part of the problem is the number (2) choice which is : 1.6 * 10 ^ 21

Because,

1.6 * 10^21
= 16 * 10^20
= 2^4 * (10^5) ^4
= (2*10^5)^4
= (200000)^4

Which is in the format n^4 where n is an integer. Here your n will be 200000. Mark option B - it is correct.
Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 144 [0], given: 0

Hi [#permalink]

### Show Tags

04 Aug 2003, 18:56
E is right for one, A for two.
ETS answer, no argument.
_________________

Ride em cowboy

Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

### Show Tags

04 Aug 2003, 19:25
VT,
If (e) is the right answer then 1.6 * 10 ^24 can be expressed as n^4. Which is wrong even if ETS says it. Because, if you take
1.6 * 10 ^24
= 16 * 10^23
= 2^4 * 10 ^ 20 * 10^3
= 2^4 * (10^5)^4 * 1000
= (2*10^5)^4 * 1000

which clearly is not in the form n^4. If (E) is the answer, please recheck the question. Thanks
Eternal Intern
Joined: 07 Jun 2003
Posts: 467
Location: Lone Star State
Followers: 1

Kudos [?]: 144 [0], given: 0

Hi [#permalink]

### Show Tags

04 Aug 2003, 20:39
I swear on ETS's bible E is right.

_________________

Ride em cowboy

Manager
Joined: 24 Jun 2003
Posts: 146
Location: India
Followers: 2

Kudos [?]: 2 [0], given: 0

### Show Tags

04 Aug 2003, 23:19
stolyar wrote:
Q1 (2)
Q2 (1)

Stolyar,

In the second question, both ST as well as ST^2 are positive. Why did you choose ST ?
SVP
Joined: 03 Feb 2003
Posts: 1603
Followers: 8

Kudos [?]: 245 [0], given: 0

### Show Tags

05 Aug 2003, 00:23
ST^2 or (ST)^2

my rationale is to terminate even powers
Manager
Joined: 24 Jun 2003
Posts: 146
Location: India
Followers: 2

Kudos [?]: 2 [0], given: 0

### Show Tags

05 Aug 2003, 01:48
stolyar wrote:
ST^2 or (ST)^2

my rationale is to terminate even powers

I'm sorry I didn't get that. Could you elaborate please?

Thanks!
SVP
Joined: 03 Feb 2003
Posts: 1603
Followers: 8

Kudos [?]: 245 [0], given: 0

### Show Tags

05 Aug 2003, 02:09
s(t^3)(u^4)>0

(t^2)(u^4) is nonnegative. Terminate it.

st>0
05 Aug 2003, 02:09
Display posts from previous: Sort by

# To everyone out there: this is good practice I got

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO 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®.