# Thread: quant comparision--PP

1. Good post? |

## quant comparision--PP

100210*90021-------100021*90210
i had to multiply both like a stupid.....this was 2nd question....i knw der is a method to take common ,,but i cudnt find out...

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100210*(90210-189)-----------(100210-189)*90210
100210*90210 - 100210*189-----------100210*90210 - 90210*189

From above we see that first terms of both sides are same.
The second terms of column B is smaller. Hence column B is greater.

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Very good solution wydiwyg Keep it up and all the best for your gre

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Thanks MWM,...and all the best to you too.Hope you will guide us after your test too.

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Ya I will. I wont be free maybe for 2 weeks or so after the exam cos I need to get my apps done quickly.. After that, I maybe able to help you all to the best of my knowledge in maths

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Originally Posted by manwiththemission2005
the best of my knowledge in maths
dats alot MWM.....
@ wydiwg.....great solns. man..keep it up

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LOL. No exaggeration. I work hard to my satisfaction.. If you place an IIT guy next to me, I will gaze at him with wonder

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Originally Posted by SagarSHAH
100210*90021-------100021*90210
i had to multiply both like a stupid.....this was 2nd question....i knw der is a method to take common ,,but i cudnt find out...
Questions like this need no calculation.
The sum of the numbers in column A (the 2 numbers in the product) is the same as the sum of the numbers in column B. Given this, the product with the numbers that are closer to each other on the number line will be greater than the other product.
Compare this idea with the fact that a square has the largest area among rectangles with the same perimeter.

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Wow Arjmen. Here comes an IITian as I said b4.. hehe Great job arjmen!!!!You r kabir rite?

Congrats on your 1000 posts Cheers!

10. Good post? |
Originally Posted by arjmen
Questions like this need no calculation.
The sum of the numbers in column A (the 2 numbers in the product) is the same as the sum of the numbers in column B. Given this, the product with the numbers that are closer to each other on the number line will be greater than the other product.
Compare this idea with the fact that a square has the largest area among 4-sided figures with the same perimeter.
Geees that was awesome trick.That will help a lot arjmen.
Cheers

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