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help reqd!

by mehaksal » Wed Aug 15, 2012 10:04 pm
can smbdy suggest me how to avoid silly mistakes and improve speed??
Also, I tend to go bad with probability, permutation and stats at times, what's d solution?!!
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by cypherskull » Thu Aug 16, 2012 4:58 am
One tip that I found useful thus far is that before u take a leap into solving a problem in full length, try and look for some hidden links between the problem statement and the answer choices. For example, refer to the following problem below that I recently found on this forum:

The perimeters of Square S and rectangular region R are equal. If the sides of R are in the ratio 2:3, what is the ratio of the area of region R to the area of region S?

a) 25:26

b) 24:25

c) 5:6

d) 4:5

e) 4:9


Since the sides of the rectangle is given to be in the ratio of 2:3, the area (of the rectangle)(LxB) has to be a multiple of 6 (2x3).

The only option is B.

By recognizing this link I didn't have to go on and solve for the areas of both the figures and then calculate the ratio.

As for the probability and permutation, i found some videos on the net that discuss the basic techniques at length and I have had lesser issues in these areas post watching those. Will post the link if I can find it.

Good luck!
Regards,
Sunit

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Kill all my demons..And my angels might die too!
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by subhash.sonu39 » Fri Aug 17, 2012 1:51 am
To Overcome silly mistakes in maths you should practice maths more than other subjects than you will be good in maths. Also you should reduce use of calculator at initial or basic level than you will see your improvement in maths.How to Do Long Division
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by neelgandham » Fri Aug 17, 2012 8:31 am
meha,

Here are the links to a few posts which will help you with your question - 'How to avoid silly mistakes?'

Stacey's advice here -> https://www.beatthegmat.com/how-to-avoid ... t6979.html
David's article here -> https://www.beatthegmat.com/mba/2011/04/ ... ess-errors
CodeSnooker/Ron's advice here(scroll down) -> https://www.beatthegmat.com/strategies-f ... 17044.html
Brent's article here -> https://www.beatthegmat.com/mba/2012/05/ ... owing-down
Brian's tricks here -> https://www.beatthegmat.com/silly-mistakes-t86955.html
GMATPREPNOW(Brent)'s free DS lessons -> https://www.gmatprepnow.com/module/gmat-data-sufficiency.

and here is the best one. https://www.beatthegmat.com/mba/category/tags/gmat-math. You will find some awesome articles from the finest GMAT gurus in the world.

My 0.02$ - Practice, Practice and more Practice

P&C, Probability help here -> https://www.beatthegmat.com/mba/2010/09/ ... d-counting and https://www.beatthegmat.com/mba/category ... mbinations
Anil Gandham
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