3^n x 9^n+1 ÷ (3^n-1 x 9^n-1)
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3
6 S.D = 5 M. D = 4 S.D
4 S.D = 5 M.D = 6 Q.D
5 S.D = 4 M.D = 6 Q.D
4 S.D = 6 M.D = 5 Q.D
Answered by
3
Answer:
3n × 9n+1 / 3n - 1 × 9n- 1
=3n -(n -1) × 9n+ 1 - n+1
=3n - n ×9n + 1 - n+ 1
=3× 9×9
=3×81
243
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