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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

When k=odd, f(k)=2k and when k=even, f(k)=3k, f(210)=?

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 amFollowed by: 37 members
Location: Las Vegas, USA
Thanked: 19 times
by Max@Math Revolution » Wed Jan 13, 2016 6:32 pm
When k=odd, f(k)=2k and when k=even, f(k)=3k, f(210)=?


A. 9^(2^9 ) B. 9^(2^10 ) C. 9^(3^9 ) D. 910 E. 99


* A solution will be posted in two days.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

by Brent@GMATPrepNow » Wed Jan 13, 2016 8:39 pm
Max@Math Revolution wrote:When k=odd, f(k)=2k and when k=even, f(k)=3k, f(210)=?
A. 9^(2^9 )
B. 9^(2^10 )
C. 9^(3^9 )
D. 910
E. 99
Is this question transcribed correctly?
210 is even, so f(210) = (3)(210) = 630

Answer: ???

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 46
Joined: Sun Dec 27, 2015 7:03 amFollowed by: 1 member
Thanked: 8 times

by chetan.sharma » Thu Jan 14, 2016 3:54 am
Max@Math Revolution wrote:When k=odd, f(k)=2k and when k=even, f(k)=3k, f(210)=?


A. 9^(2^9 ) B. 9^(2^10 ) C. 9^(3^9 ) D. 910 E. 99


* A solution will be posted in two days.
Hi,

looking at the Q and the answer choices, I feel some signs are missing.
The Q should be something like this..

Q. When k is odd, f(k)=2^k and when k is even, f(k)=3^k, f(2^10)=?

A. 9^(2^9 )
B. 9^(2^10 )
C. 9^(3^9 )
D. 9^10
E. 9^9
So , the answer in this case will be..
here k is 2^10 and so even..
so f(2^10)= 3^( 2^10)..
now to get this to base 9, we will square 3 and half the power..

3^(2^10)=(3^2)^{(2^10)/2}..
= 9^(2^9)..
A
ans A
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 amFollowed by: 37 members
Location: Las Vegas, USA
Thanked: 19 times

by Max@Math Revolution » Mon Jan 18, 2016 8:55 pm
When k=odd, f(k)=2k and when k=even, f(k)=3^k, f(2^10)=?


A. 9^(2^9 )
B. 9^(2^10 )
C. 9^(3^9 )
D. 9^10
E. 9^9


-> f(210)=3^(2^10 )=3^((2)(2^9))=(〖3^2)〗^(2^9 )=9^(2^9 )
Therefore, the answer is A.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

by Brent@GMATPrepNow » Tue Jan 19, 2016 10:22 am
Max@Math Revolution wrote:When k=odd, f(k)=2k and when k=even, f(k)=3^k, f(2^10)=?


A. 9^(2^9 )
B. 9^(2^10 )
C. 9^(3^9 )
D. 9^10
E. 9^9
When posting questions in the future, please take a few seconds to ensure that your question is displayed properly. As you can see from the original wording...
Max@Math Revolution wrote:When k=odd, f(k)=2k and when k=even, f(k)=3k, f(210)=?
A. 9^(2^9 ) B. 9^(2^10 ) C. 9^(3^9 ) D. 910 E. 99
..... the question you answered differs from the question you posted.

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1