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eight women in two rows...

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Re: eight women in two rows...

by logitech » Wed Dec 24, 2008 7:12 pm
ch0719 wrote:the answer is D

can anyone explain how to get to the right answer in the minimum amount of time on this kind of question? thanks and happy holidays :D
WOW!!

First of all, lets call these ladies:

1,2,3,4,5,6,7 and 8 inches tall :)

However the pose 1 will be in the first row and on the left and 8 will be in the second row on the right:

1 X X X
X X X 8

2 does not have too many choices:


1 X X X
2 X X 8 or

1 2 X X
X X X 8

Now it is time for 3


1 3 X X
2 X X 8

OR


1 X X X
2 3 X 8

OR

1 2 3 X
X X X 8

OR

1 2 X X
3 X X 8

Okay so far we have 4 different ways of placing 1,2,3 and 8 and my 2 minutes is UP!! So I would guess 4x3=12 or 4x4=16 and move on!

:(

If I carry my solution, I will find the OA but this is not the point in GMAT.

Any under 2 min solutions ?
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Re: eight women in two rows...

by ronniecoleman » Wed Dec 24, 2008 10:29 pm
logitech wrote:
ch0719 wrote:the answer is D

can anyone explain how to get to the right answer in the minimum amount of time on this kind of question? thanks and happy holidays :D
WOW!!

First of all, lets call these ladies:

1,2,3,4,5,6,7 and 8 inches tall :)

However the pose 1 will be in the first row and on the left and 8 will be in the second row on the right:

1 X X X
X X X 8

2 does not have too many choices:


1 X X X
2 X X 8 or

1 2 X X
X X X 8

Now it is time for 3


1 3 X X
2 X X 8

OR


1 X X X
2 3 X 8

OR

1 2 3 X
X X X 8

OR

1 2 X X
3 X X 8

Okay so far we have 4 different ways of placing 1,2,3 and 8 and my 2 minutes is UP!! So I would guess 4x3=12 or 4x4=16 and move on!

:(

If I carry my solution, I will find the OA but this is not the point in GMAT.

Any under 2 min solutions ?

Wow~ dude nice work!!
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by ch0719 » Wed Dec 24, 2008 10:39 pm
I don't think
1 X X X
2 3 X 8
would work...



it prob will take 5 min to solve this question if no other easier way to do it



if I see this kind of question on the real GMAT I will know I am doing well

lol...
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by dla5h expert » Thu Dec 25, 2008 2:26 pm
hmmmm it need more than 2 min ..

Lets try

one and eight are fixed so they have zero possible way of change

1 X X X
X X X 8

2 can go in :

1 X X X
X X X 8 1 possible way

3 can go in :

1 X X X
X X X 8 3 possible ways

so I guess 4 will have 4 possible ways

5 can go in :


1 X X X
X X X 8 3 possible ways

so I will guess

6 will have 2 possible ways
7 will have 1 possible way

the total is 14 ways ..

I am not sure but I think B is the correct answer
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by vittalgmat » Fri Dec 26, 2008 7:26 pm
I wonder if we will see this kind of problem in real GMAT.
Can somebody comment on this.
It has more than 4 steps to solve and takes 4 or 5 mins to solve.

Stuart, Ian, ??

Thanks
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by vishubn » Fri Dec 26, 2008 7:42 pm
vittalgmat wrote:I wonder if we will see this kind of problem in real GMAT.
Can somebody comment on this.
It has more than 4 steps to solve and takes 4 or 5 mins to solve.

Stuart, Ian, ??

Thanks

Same thought vittal !!

can stuart/Ron/Ian !! neone ???

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by cramya » Fri Dec 26, 2008 10:45 pm
I may be off here but I think I read Ian's or Ron's posts that said parts/concepts used in this problem may appear on the gmat but definitely not such a lengthy problem like this.
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by vittalgmat » Fri Dec 26, 2008 11:26 pm
Thanks Cramya
That puts my fears to rest!!! :-)
well, sure, the concepts are fine to be tested. I was worried about the # of steps needed..
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