If $T_{n} = 3 n + 8$ , then $T_{n - 1} =$

3 n + 7

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3 n + 6

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3 n - 5

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3 n + 5

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Solution

The correct option is C $3 n + 5$
Given, $T_{n} = 3 n + 8$
$=> T_{n - 1} = 3 (n - 1) + 8 = 3 n - 3 + 8 = 3 n + 5$

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