Real Easy Question

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by sudhir3127 » Sat Aug 09, 2008 8:47 pm
IMO A.2^8

here it goes..

2^ (4-1)^2/2^(3-2)
it can be written as

2^(3)^2/2

hence 2^9/2 = 2^8.

Hope its helps...

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by rey.fernandez » Sat Aug 09, 2008 9:10 pm
I agree with sudhir, but would just add a couple more brackets to make it clear how the powers are working in the numerator:

2^[(4-1)^2] / 2^(3-2)
2^(3^2) / 2^(3-2)
2^9 / 2^1
2^8
Rey Fernandez
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Manhattan GMAT

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by ajmoney09 » Sat Aug 09, 2008 10:18 pm
thanks to both of you! I was originally instead of taking the three to a power of two I was multiplying by two...

Thanks again!!