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# I am having trouble with Quant problems wherein the

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I am having trouble with Quant problems wherein the [#permalink]  28 Dec 2006, 02:21
I am having trouble with Quant problems wherein the following type of calculations are required:

(2^30-2^29)+2^31 (Read as 2 raise to the power 30 and so on)

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I don't know the result that u need to get ... But, I proceed like this

(2^30-2^29)+2^31
= 2^29*(2-1) + 2^31
= 2^29 + 2^31
= 2^29*(1+2^2)
= 5*2^29
Intern
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Well, thats the right approach, I think so...

cuz d answer is right...So simple yet so unthinkable!
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bhalla.sumant wrote:
Well, thats the right approach, I think so...

cuz d answer is right...So simple yet so unthinkable!

Sometimes to simplify, we need to factorize first rather than expand the expressions
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# I am having trouble with Quant problems wherein the

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