#### Question

If `S_5 = 15` and `S_6 = 21`, Find `t_6`.

#### Solution

`S_(n+1) - S_n = t_(n+1)`

`t_6 = S_6 - S_5 = 21 - 15 = 6`

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#### APPEARS IN

Solution If `S_5 = 15` and `S_6 = 21`, Find `T_6`. Concept: Arithmetic Progression.