JEE Main 2020 — Sequences And Series Question with Solution
From: JEE Main 2020 (Online) 4th September Evening Slot
Question
Let a1, a2, ..., an be a given A.P. whose
common difference is an integer and
Sn = a1 + a2 + .... + an. If a1 = 1, an = 300 and 15 n 50, then
the ordered pair (Sn-4, an–4) is equal to:
common difference is an integer and
Sn = a1 + a2 + .... + an. If a1 = 1, an = 300 and 15 n 50, then
the ordered pair (Sn-4, an–4) is equal to:
Choose an option
Show full solutionCorrect option: C
Correct answer
C(2490, 248)
Step-by-step explanation
since, n [15, 50]
n = 24 and d = 13
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This is a previous-year question from JEE Main 2020, covering the Sequences And Series chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.