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sequence

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by DanaJ » Sun Mar 29, 2009 8:32 am
This question has been answered many times before:

https://www.beatthegmat.com/-t28541.html

https://www.beatthegmat.com/1-k-1-1-2-k-help-t25607.html
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Re: sequence

by vittalgmat » Sun Mar 29, 2009 11:33 pm
baller12q wrote:For every integer K from 1 to 10, inclusive, the Kth term of a certain sequence is given by (-1)^k+1 (1/2^K. If T is the sum of the first 10 terms in the sequence, then T is?
Ballerq,
Next time pls include the answer choices as well. Without that, you will lose some excellent strategy tips in solving the problem quicker by POE - something we all need to do on the real one.

thanks
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