Let Sn = 4 + 7 + 13 + 25 + 49 + …. + tn,...

Let `S_n = 4 + 7 + 13 + 25 + 49 + …. + t_n`, find `t_n and S_n`:

A

`1 + 3 × 4^(n - 1)` AND `n + 3 × 2^(n −3)`

B

`1 + 3 × 2^(n - 1)` AND `n + 3 × (2^(n) −1)`

C

`4 + 3 × 2^(n - 1)` AND `n + 3 × 2^(n −2)`

D

`1 + 2 × 2^(n - 1)` AND `n + 3 × 2^(n −2)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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