Math, asked by sumanyadavnisha, 1 year ago


Sum the following:
(i) 1, 3, 9, 27, ...... to 20 terms​

Answers

Answered by vaishnav7474
0

Answer:

210

Step-by-step explanation:

n (n+1)/2

20 (20+1)/2

10 (21)

210

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