Last visit was: 11 Dec 2024, 10:25 It is currently 11 Dec 2024, 10:25
Home
GMAT
Messages
Tests
Schools
Reviews
Social
Chat
My Profile
Close
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
User avatar
shubhangi
User avatar
Joined: 30 Aug 2003
Last visit: 26 Aug 2004
Posts: 183
Own Kudos:
173
Location: dallas , tx
Posts: 183
Kudos: 173
if a ,b,c,d are is in the form of 2^n and n is an integer. 23 Mar 2004, 11:37
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

History

Date
Time
Result
Not Attempted Yet
if a ,b,c,d are is in the form of 2^n and n is an integer. what is the value of d?

a+b+c+d=170
abcd =2^16



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
Paul
User avatar
Joined: 15 Dec 2003
Last visit: 10 Nov 2012
Posts: 2,708
Own Kudos:
1,578
Posts: 2,708
Kudos: 1,578
if a ,b,c,d are is in the form of 2^n and n is an integer. 23 Mar 2004, 12:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Agree with E.
from 1: 2^w + 2^x + 2^y + 2^z = 170. insuff.
from 2: w+x+y+z = 16 insuff.
Both are insuff.
User avatar
shubhangi
User avatar
Joined: 30 Aug 2003
Last visit: 26 Aug 2004
Posts: 183
Own Kudos:
173
Location: dallas , tx
Posts: 183
Kudos: 173
if a ,b,c,d are is in the form of 2^n and n is an integer. 23 Mar 2004, 12:35
Kudos
Add Kudos
Bookmarks
Bookmark this Post
actually i didnt understand the question properly..does it say that assume abcd as power of 2 ??
User avatar
Virtual
User avatar
Joined: 10 Mar 2004
Last visit: 30 Jul 2004
Posts: 35
Location: Dallas,TX
Posts: 35
Kudos: 0
if a ,b,c,d are is in the form of 2^n and n is an integer. 23 Mar 2004, 12:46
Kudos
Add Kudos
Bookmarks
Bookmark this Post
shubhangi
actually i didnt understand the question properly..does it say that assume abcd as power of 2 ??


NOPE :no

a, b, c, d are all integers of set { (2^0), (2^1), (2^2), (2^3)......(2^n)}

so a+b+c+d = 170 may be possible. Even if it is possible, we cannot say anything about the value of 'd'.

In (2), ques. refers to the product of a,b,c,d

abcd=a*b*c*d = 2^16. Again this is possible but we cannot say anything about the value of 'd'.

Using both the hints also, it is not possible.

Hence E

HTH
User avatar
hallelujah1234
User avatar
Joined: 02 Mar 2004
Last visit: 29 Jan 2023
Posts: 191
Own Kudos:
14
Location: There
Posts: 191
Kudos: 14
if a ,b,c,d are is in the form of 2^n and n is an integer. 23 Mar 2004, 14:32
Kudos
Add Kudos
Bookmarks
Bookmark this Post
(1) 2^k + 2^l +2^m +2^n = 170 = 2. 85 = 2(1+4+16+64)= 2(2^0+2^2+2^4+2^6)

is any permutation of

(2) k+l+m+n = 16


Combing (1) and (2) yields = any permutation of

Hence we cant find THE value of d = 2^n.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderators:
Bunuel
Math Expert
97809 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3116 posts
GMATBusters
GMAT Tutor
1930 posts