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kaplan premier Cat1

by luiscarlos59 » Mon Jan 02, 2012 6:37 pm
Hi
I got this question on my Cat #1 Kaplan Premier 2008 CD. Dont know how to get to the answer.

2^21 / (4^4(4^4+4^5))

I got stuck when i factored to 2^21 / (2^8(2^8+2^10))


OA: [spoiler]2^5/5[/spoiler]
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by neelgandham » Mon Jan 02, 2012 6:43 pm
2^21 / (4^4)*(4^4+4^5))
2^21 / (2^8)*(2^8+2^10))
2^21 / ((2^8)*(2^8))(1+2^2))
2^21 / ((2^16)*5)
2^(21-16) /5
(2^5)/5

Hope that helps!
Anil Gandham
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by pemdas » Mon Jan 02, 2012 7:47 pm
2^21 / (4^4(4^4+4^5))=2^21/(4^8(1+4)=2^21/5*2^16=2^5/5=32/5
luiscarlos59 wrote:Hi
I got this question on my Cat #1 Kaplan Premier 2008 CD. Dont know how to get to the answer.

2^21 / (4^4(4^4+4^5))

I got stuck when i factored to 2^21 / (2^8(2^8+2^10))


OA: [spoiler]2^5/5[/spoiler]
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