Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

It is currently 18 Jul 2019, 10:28

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.

Close

Request Expert Reply

Confirm Cancel

If z = 3^4, then (3^z)^z =

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 56256
If z = 3^4, then (3^z)^z =  [#permalink]

Show Tags

New post 15 Jul 2018, 08:27
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

77% (01:05) correct 23% (01:34) wrong based on 48 sessions

HideShow timer Statistics


Retired Moderator
avatar
D
Joined: 25 Feb 2013
Posts: 1197
Location: India
GPA: 3.82
GMAT ToolKit User Reviews Badge
If z = 3^4, then (3^z)^z =  [#permalink]

Show Tags

New post 15 Jul 2018, 08:54
Bunuel wrote:
If \(z = 3^4\), then \((3^z)^z =\)


(A) \(3^{16}\)

(B) \(3^{81}\)

(C) \(3^{324}\)

(D) \(3^{405}\)

(E) \(3^{6561}\)


\(z=3^4=81\)

so \((3^z)^z=(3^{81})^{81}=3^{81*81}\)

we do not need to calculate the exact value. \(81*81\) will have a units digit of \(1\). Only Option B & E have units digit \(1\). Obviously option B is not possible.

Hence option E
GMAT Club Bot
If z = 3^4, then (3^z)^z =   [#permalink] 15 Jul 2018, 08:54
Display posts from previous: Sort by

If z = 3^4, then (3^z)^z =

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





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne