Pls answer this.

Pls answer this. + (371—1 X 9n—1). n x 9n+1 (ii)

Ans. 1/3
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I got the answer as 1. Is it correct?
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3 power n * 9 power n+1 / 3 power n-1 * 9 power n-1

3 power n * 3 power 2(n+1) / 3power n-1 * 3power 2(n-1)

3power n + 2n + 2 / 3power n - 1 + 2n - 2

3power 3n + 2 / 3power 3n - 3

3power 3n + 2 - (3n -3)

3power 3n + 2 - 3n + 3

3power 5

=243
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