Question

find the sum of 1, -1/2, 1/4, -1/8, ... to n terms!​

Answer 1

Answer: 2/3

Step-by-step explanation: the following series is a geometric progression

where A=1 and R=-1/2 and R<1

therefore , Sn = a/(1-r)

1/1+1/2=2/3

Answer 2

Step-by-step explanation:

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