integers

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divya23: Master | Next Rank: 500 Posts; Posts: 113; Joined: Mon Apr 26, 2010 8:58 amFollowed by: 14 members; Thanked: 2 times

by divya23 » Thu Jun 09, 2011 8:43 am

for any +ve int n length of n is defined as no . of prome factors huse prod is = n
ex lentght of 75 = 3 since 75 = 3 5 5
how many 2 digits +ve int have lengt = 6
none
one
two
three
four
[spoiler]ans = two[/spoiler]

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Source: Beat The GMAT — Problem Solving | Thu Jun 09, 2011 8:43 am

manpsingh87: Master | Next Rank: 500 Posts; Posts: 436; Joined: Tue Feb 08, 2011 3:07 amFollowed by: 6 members; Thanked: 72 times

by manpsingh87 » Thu Jun 09, 2011 8:50 am

divya23 wrote:for any +ve int n length of n is defined as no . of prome factors huse prod is = n
ex lentght of 75 = 3 since 75 = 3 5 5
how many 2 digits +ve int have lengt = 6
none
one
two
three
four
[spoiler]ans = two[/spoiler]

numbers are 64=2^6;
and 96=2^5*3;
hence two

PS: stop using sms lingo, while posting your questions..!!!

O Excellence... my search for you is on... you can be far.. but not beyond my reach!

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cans: Legendary Member; Posts: 1309; Joined: Mon Apr 04, 2011 5:34 amFollowed by: 123 members; Location: India; Thanked: 310 times; GMAT Score:750

by cans » Thu Jun 09, 2011 8:50 am

2 digits integer with length=6
2^6 = 64
2^5*3 = 96
3^6 = 729
2^4*3^2 =144
2^3*3^3 = 27*8 = 216
2^2*3^4 >216
thus two (64 and 96)

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Stuart@KaplanGMAT: GMAT Instructor; Posts: 3225; Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members; Location: Toronto; Thanked: 1710 times; GMAT Score:800

by Stuart@KaplanGMAT » Thu Jun 09, 2011 9:01 am

divya23 wrote:for any +ve int n length of n is defined as no . of prome factors huse prod is = n
ex lentght of 75 = 3 since 75 = 3 5 5
how many 2 digits +ve int have lengt = 6
none
one
two
three
four
[spoiler]ans = two[/spoiler]

Hi Divya,

while I appreciate your enthusiasm for getting your questions posted as quickly as possible, I'm sure that I speak for all BTG users when I say we'd appreciate it even more if you'd slow down a bit and proofread your posts - there are so many typos and abbreviations that it's almost impossible to determine the actual question.

The best way to prepare for the GMAT is to practice questions that are as similar as possible to those that you'd find on the test; since the GMAT always uses proper English (and full sentences), practice questions should be expressed in that form as well.

Thanks!

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
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