SOLUTION: Using this formula sn=a1 (1-rN)÷1-r. Find the sum of 3+6+12+24...+192

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Question 841587: Using this formula sn=a1 (1-rN)÷1-r. Find the sum of 3+6+12+24...+192
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi,
Find the sum of 3+6+12+24...+192 |Geometric, r = 2

First Find 'n'

⇒ (n-1) = 6, n = 7


Wish You the Best in your Studies.

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