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Find the sum of the indicated terms of the geometric sequence.

2, 4, 8 ... (to 8 terms)

 

a. s=508

b. s=512

c. s=510

d. s=514

e. none of the above 

 Aug 27, 2016
 #1
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It is "c"

 Aug 27, 2016
 #2
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The sum is given by:

 

S =   2 * [1 - 2^8 ]  / [ 1 - 2]  =   510

 

 

cool cool cool

 Aug 27, 2016

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