Five marks example problems I — task. Mathematics State Board, Class 10.

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The general term for a sequence is defined as

a_{n} = \{\begin{array}{l} n (n + 3); n \in ℕ is odd \\ n^{2} + 1; n \in ℕ is even \end{array}\}

Find the eleventh and eighteenth terms.

Eleventh term \(=\)

Eighteenth term \(=\)

Did you find an error?

18. Five marks example problems I