GMAT Prep Q : Exp

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by Anurag@Gurome » Sun Jan 02, 2011 7:39 pm
santoshs wrote:1) If (1/5)m(1/4)18 = 1/2(10)35, m?
The expression on the right hand side is a little bit confusing, both 10 and 35 are in the denominator? Can you please check again?
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by anshumishra » Sun Jan 02, 2011 7:41 pm
santoshs wrote:1) If (1/5)m(1/4)18 = 1/2(10)35, m?
The question is :

(1/5)^m * (1/4)^18 = 1/(2(10)^35)

=> 5*(-m)=2^(36)/2*10^35 = 1/5^(35) = 5^(-35)

=> m = 35.
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by shashank.ism » Sun Jan 02, 2011 8:55 pm
If question is this... (1/5)^m * (1/4)^18 = 1/(2(10)^35)
we can write it as -> (1/5)^m * (1/2)^36 = 1/[2* (2*5)^35]
-> (1/5)^m * (1/2)^36 = 1/(2^36 * 5^35) -> [spoiler]m = 35 Ans.[/spoiler]
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