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GMAT Prep: Functions

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Master | Next Rank: 500 Posts
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by bsandhyav » Sat Jul 11, 2009 9:27 am
Hi guyz....Anyone on the answer to the following Question?

I solved it straight forward to get the Answer as A which is wrong.

Please help !

My Approach...

[9]*[6] = 3*9*0.5*6 =81
{since 9 is odd [9]=(3*9) &
since 6 is even [6]=(0.5*6)}


Where am i going wrong??? :?:
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by shibal » Sat Jul 11, 2009 10:40 am
well, i got 81 as well, is the right answer 54? (simply 9x6)
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Re: GMAT Prep: Functions

by real2008 » Sun Jul 12, 2009 11:31 am
bsandhyav wrote:Hi guyz....Anyone on the answer to the following Question?

I solved it straight forward to get the Answer as A which is wrong.

Please help !

My Approach...

[9]*[6] = 3*9*0.5*6 =81
{since 9 is odd [9]=(3*9) &
since 6 is even [6]=(0.5*6)}


Where am i going wrong??? :?:
answer is D
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by shibal » Sun Jul 12, 2009 1:58 pm
ok, how should we solve it than?
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by real2008 » Sun Jul 12, 2009 9:22 pm
Fine!

[9]*[6]

= (3*9) * (6/2)

= 81

Now, choiceA: [81] = 243
choiceB: [54]= 27
choiceC: [36]= 18
choiceD: [27]= 81
choiceE: [18]= 9

so given expression = 81 , choiceD


HTH
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