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What is sigma 2^n. i need the answer by 1 pm ,please send it soon.............

i am waiting...........................
could you please take a screenshot of actual complete question and attach
i have a problem with my camera
Ohk.. see if the answer makes sense



This is a geometric series with common ratio = 2 and it has N+1 terms.
Using partial sum formula, the sum equals :

1 4 1
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