Let t_1, t_2,… be real numbers such that t_1+ t_2 +... + t_n = 2n^2 + 9n + 13, for every positive integer n ≥ 2. If t_k=103, then k equals (TITA)

CAT 2018 Slot 2 QA Q5 Progressions & Series

Question 5 of the Quantitative Ability (QA) section, CAT 2018 Slot 2, with CAT's official answer.

Let t₁, t₂,… be real numbers such that t₁+ t₂ +... + t_n = 2n² + 9n + 13, for every positive integer n ≥ 2. If t_k=103, then k equals (TITA)

TITA: type in the answer. There are no options and no negative marking.

Answer: 24 Progressions & Series TITA

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