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18 votes
1/2n + 2n + 3/2n - 1

User Yvanne
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2 Answers

3 votes

Answer:

next question is a1= 1 and r=2

have a nice day :)

Explanation:

User Gagan Raghunath
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8.5k points
7 votes

Answer:

B

Explanation:

User Alpennec
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