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exponent problem HELP

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exponent problem HELP

by kamfah2 » Sat Jun 21, 2008 7:53 am
this might of been addressed already but I couldnt find the proble or one similiar to it.

2^(4-1)^2/2^3-2

GMAT prep said the answer is 2^8 Im having a hard time understanding why not 2^5

Thanks,
Kamfah2
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by sibbineni » Sat Jun 21, 2008 8:14 am
Question:

2^(4-1)^2/2^3-2

consider first part

2^(4-1)^2=> 2^3^2=>2^9-----(1)

consider second part

2^(3-2)=>2^1-----(2)

then from 1 and 2

2^9/2^1==>2^(9-1)==>2^8


let me know if u still have a problem
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exponent problem HELP

by kamfah2 » Tue Jul 01, 2008 5:30 pm
I got lost when I needed to square the exponent. (2^3^2)

BTW: Any suggestions on timing?
Kamfah2
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