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ksb
 Post subject: Highest Power of 3 that divides 10! (factorial 10)
PostPosted: Thu Dec 01, 2011 12:53 am 
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Joined: Tue Dec 28, 2004 2:34 am
Posts: 93
Location: Chennai, India
What is the highest power of 3 that divides 10!
A. 4
B. 3
C. 6
D. 5
E. 2

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ksb
 Post subject: Re: Highest Power of 3 that divides 10! (factorial 10)
PostPosted: Mon Dec 05, 2011 7:54 am 
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GMAT Tutor

Joined: Tue Dec 28, 2004 2:34 am
Posts: 93
Location: Chennai, India
The correct answer is 4. Choice (a).

Here is a youtube presentation that explains the method to find the answer.
http://youtu.be/idLK3eHTF5E

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KSB
Tutor, 4GMAT.COM - GMAT Classes @ Chennai, Mumbai and Bangalore
ACE GMAT Quant with 4GMAT's Advanced Math Lesson Books, eBooks.
Next Weekend Batch @ Chennai starts Feb 25, 2012

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