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The sum, \(S_{n}\), of a sequence is given by \(S_{n} = 2n^{2} - 5\). ...

The sum, \(S_{n}\), of a sequence is given by \(S_{n} = 2n^{2} - 5\). Find the 6th term.
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  • A 112
  • B 67
  • C 45
  • D 22
Correct Answer: Option D
Explanation:
\(S_{n} = 2n^{2} - 5\)

\(T_{n} = S_{n} - S_{n - 1}\)

\(T_{6} = S_{6} - S_{5}\)

= \((2(6^{2} - 5) - (2(5^{2} - 5) = 62 - 40 = 22\)

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