It is currently 18 Oct 2017, 06:24

### 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

# F(12) = 2*4*6*8*10*12 what is the largest prime factor of

Author Message
Manager
Joined: 11 Jul 2004
Posts: 119

Kudos [?]: 33 [0], given: 0

F(12) = 2*4*6*8*10*12 what is the largest prime factor of [#permalink]

### Show Tags

31 Aug 2004, 11:08
00:00

Difficulty:

(N/A)

Question Stats:

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

### HideShow timer Statistics

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

F(12) = 2*4*6*8*10*12

what is the largest prime factor of f(24)

thanks

Kudos [?]: 33 [0], given: 0

Intern
Joined: 10 Aug 2004
Posts: 40

Kudos [?]: 1 [0], given: 0

### Show Tags

31 Aug 2004, 11:20
My guess is 11. The factorial of f(24) leaves us with 2^22*3^5*5^2*7^1*11^1. Being that a prime number has only two factors (1 and itself), the largest prime factor is 11.

Kudos [?]: 1 [0], given: 0

Manager
Joined: 02 Apr 2004
Posts: 222

Kudos [?]: 23 [0], given: 0

Location: Utrecht

### Show Tags

31 Aug 2004, 14:15
I used the same approach like abennett and got also 11 as the largest prime of F(24).

By factoring them all out it is possible to reach 11 as the largest prime since an prime is only divisibly by one and itself.

Correct me if I am wrong.

Regards,

Alex

Kudos [?]: 23 [0], given: 0

Joined: 31 Dec 1969

Kudos [?]: [0], given:

Location: Russian Federation
GMAT 3: 740 Q40 V50
GMAT 4: 700 Q48 V38
GMAT 5: 710 Q45 V41
GMAT 6: 680 Q47 V36
GMAT 9: 740 Q49 V42
GMAT 11: 500 Q47 V33
GMAT 14: 760 Q49 V44
WE: Supply Chain Management (Energy and Utilities)

### Show Tags

31 Aug 2004, 18:58
Does F refer to factorial ? I'm not sure it means factorial because in the question, because it says F(12) = 2*4*6*8*10*12.
If F is factorial then F(12) = 12*11*9*8*7*6*5*4*4*2*1

Kudos [?]: [0], given:

Intern
Joined: 31 Aug 2004
Posts: 22

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

### Show Tags

31 Aug 2004, 19:24
No 'guest'...F does nt refer to factorial.....is is the product of the even integers less than or equal to the n in F(n)

thus F(24)=2.4.6.8.10.12.14.16.18.20.22.24

factorize.....u get 2.(2^2).(2.3).(2^3).(2.5).(2^2 *3)............n thus the pwers mentioned in the earlier post wid highes prim factor 11.........the answer......

i hp i m not wrong

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

31 Aug 2004, 19:24
Display posts from previous: Sort by