Question

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Answer 1

Answer:

I wish this will help you

Answer 2

Answer:

(GP series)

The above sequence is a G.P

Common difference = 3.

First term = 1.

Thus sum of G.P is Sn = 1(3^n-1)/3-1

= 3^n-1/2

= Sn = 364

Hence,

3^n-1/2 = 364

3^n-1 = 728

3^n = 728+1 = 729

3^n = 3^6

Therefore,

n = 6.

→Option (b) is the correct solution!

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