JEE Main 5 April 2026, Shift 1, Maths Q2

Question 2 of 75 in this shift, Maths question 2 of 25, Section A.

Let the sum of the first

n

terms of an A.P. be

3n^2 + 5n

. Then the sum of squares of the first 10 terms of the A.P. is:

(1)10220
(2)12860
(3)15220Official answer
(4)19780

Official answer

Option 3

NTA final key.

Chapter: Sequences and Series
Topic: AP and GP
Idea tested: AP Recognition from Quadratic Sum

Same idea in other shifts

Asked 2× in all

31 Aug 2021, Shift 2 · Q65Let $\mathrm{a_1, a_2, a_3, ...}$ be an A.P. If $\frac{\mathrm{a_1+a_2+...+a_{10}}}{\mathrm{a_1+a_2+...+a_p}} = \frac{100}{\mathrm{p}^2}$ ,…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.