|
Author |
Message |
|
TAGS:
|
|
|
Manager
Joined: 19 Sep 2005
Posts: 110
Followers: 1
Kudos [?]:
2
[0], given: 0
|
crazy integer multiplication [#permalink]
 08 Nov 2005, 22:09
How do you solve this one quickly?
For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n inclusive. If p is the smallest prime factor of h(100) + 1, then p is
a. between 2 and 10
b. b/n 10 and 20
c. b/n 20 and 30
d. b/n 30 and 40
e. greater than 40
thanks!
|
|
|
|
|
|
|
SVP
Joined: 24 Sep 2005
Posts: 1913
Followers: 6
Kudos [?]:
55
[0], given: 0
|
Re: crazy integer multiplication [#permalink]
08 Nov 2005, 22:17
Jennif102 wrote: How do you solve this one quickly?
For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n inclusive. If p is the smallest prime factor of h(100) + 1, then p is
a. between 2 and 10
b. b/n 10 and 20
c. b/n 20 and 30
d. b/n 30 and 40
e. greater than 40
thanks!
This problem was posted several times not long ago...you may search for it. Btw, it's E.
|
|
|
|
|
|
Director
Joined: 21 Aug 2005
Posts: 803
Followers: 2
Kudos [?]:
2
[0], given: 0
|
h(100)+1 = (2.4.6...100)+1 = 2(1.2.3...50)+1
All prime factors less than 50 will yield a remainder of 1. So nothing less than 50 is a factor of this. Hence E.
Hey laxie, is that you in the picture? 
How were you able to upload something from outside this site? I keep getting errors when I try to do it 
|
|
|
|
|
|
SVP
Joined: 24 Sep 2005
Posts: 1913
Followers: 6
Kudos [?]:
55
[0], given: 0
|
gsr wrote: Hey laxie, is that you in the picture? How were you able to upload something from outside this site? I keep getting errors when I try to do it ah, i encountered the same error when trying to upload pix too ...guess what, I tried putting the link/ URL in the off-site fill-in place and it WORKED ...you may try it out~!!
Uhm, guess whether it's me ...if you answer correctly ..i'll reward you a piece of chocolates ^_~
|
|
|
|
|
|
Current Student
Joined: 28 Dec 2004
Posts: 3440
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 11
Kudos [?]:
134
[0], given: 2
|
hmm...whats with this shady chocolate business???
where is my sugga candy?
laxieqv wrote: gsr wrote: Hey laxie, is that you in the picture? How were you able to upload something from outside this site? I keep getting errors when I try to do it ah, i encountered the same error when trying to upload pix too ...guess what, I tried putting the link/ URL in the off-site fill-in place and it WORKED ...you may try it out~!! Uhm, guess whether it's me ...if you answer correctly ..i'll reward you a piece of chocolates ^_~ |
|
|
|
|
|
Director
Joined: 21 Aug 2005
Posts: 803
Followers: 2
Kudos [?]:
2
[0], given: 0
|
laxieqv wrote: gsr wrote: ah, i encountered the same error when trying to upload pix too ...guess what, I tried putting the link/ URL in the off-site fill-in place and it WORKED ...you may try it out~!! Uhm, guess whether it's me ...if you answer correctly ..i'll reward you a piece of chocolates ^_~ 1. Can you please explain the upload more in detail.
2. "guess whether it's me" The answer to this DS question is E. Insufficient data. So, I got it right!! Where are my chocolates?! 
|
|
|
|
|
|
SVP
Joined: 24 Sep 2005
Posts: 1913
Followers: 6
Kudos [?]:
55
[0], given: 0
|
ok, i captured a pic for you to see it clearly ...eager to see your new avatars 
well, did i say it's a DS question?!! ..it's a problem solving ..so of coz , no data provided
|
|
|
|
|
|
SVP
Joined: 24 Sep 2005
Posts: 1913
Followers: 6
Kudos [?]:
55
[0], given: 0
|
ok, i captured a pic for you to see it clearly ...eager to see your new avatars
well, did i say it's a DS question?!! ..it's a problem solving ..so of coz , no data provided
Attachments
 guide.doc [25.5 KiB]
Downloaded 29 times
|
|
|
|
|
|
Director
Joined: 21 Aug 2005
Posts: 803
Followers: 2
Kudos [?]:
2
[0], given: 0
|
Cool, Laxie! I'am too tired now. Eyes are begging me to turn away from the monitor - been staring at this for 12 hours straight!
See you tomorrow with my new Avtar and will collect my chocolates/candies!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
close
