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eracnos: Junior | Next Rank: 30 Posts; Posts: 28; Joined: Thu Oct 23, 2008 2:53 pm; Location: Moscow, Russia

by eracnos » Fri Nov 07, 2008 12:57 pm

Sorry for stupid question.... can anyone help me with this? I still cannot get it?
Correct answer D

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Source: Beat The GMAT — Problem Solving | Fri Nov 07, 2008 12:57 pm

logitech: Legendary Member; Posts: 2134; Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members; Thanked: 237 times; GMAT Score:730

Re: Help?

by logitech » Fri Nov 07, 2008 1:04 pm

eracnos wrote:Sorry for stupid question.... can anyone help me with this? I still cannot get it?
Correct answer D

Eracnos, one thing you need to pay attention is that the answer choices are written in "square function" form.

So, if you carry the calculation

SQ(9) x SQ(6) = 27x3

If you look at the answer choices, you will see that

SQ(27) , which is equal to the 27x3 :!:

Hence, D

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amitabhprasad: Master | Next Rank: 500 Posts; Posts: 259; Joined: Thu Jan 18, 2007 8:30 pm; Thanked: 16 times

by amitabhprasad » Fri Nov 07, 2008 3:30 pm

Thanks @ logitech
It was making me crazy, how on earth to decipher this

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