If the terms of a sequence are $t_1, t_2, t_3, \ldots, t_n,$ what is the value of $n?$

If the terms of a sequence are $t_1, t_2, t_3, \ldots, t_n,$ what is the value of $n?$

(1) The sum of the $n$ terms is $3,124.$

(2) The average (arithmetic mean) of the $n$ terms is $4.$

Answer: C

Source: GMAT Prep

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