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2019 MHT-CET PCM SET - 03 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CET2019 MHT-CET PCM SET - 031 Mark
MCQ
For a sequence $(t_n),$ if $S_n = 5(2^n - 1)$ then $t_n = ........$
  • A
    $\frac{2 \times\left(2^{ n -1}\right)}{5}$
  • ✓
    $5 (2^{n-1})$
  • C
    $5 (2^{n+1})$
  • D
    $\frac{5 \times 2^{ n }}{4}$
✓

Answer

Correct option: B.
$5 (2^{n-1})$
$5 (2^{n-1})$

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