ମୂଲ୍ୟ ଖୋଜନ୍ତୁ ।

\(1 + \frac{1}{5 \times 4} + \frac{1}{5 \times 4^2} + \frac{1}{5 \times 4^3} \)

1
320/341
2
572/475
3
341/320
4
754/547

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