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JEE Main 2017 · MathsMultiple choiceSingle correctHardMulti-step

JEE Main 2 April 2017 (offline), Maths Q68

Question 68 of 90 in this shift, Maths question 8 of 30.

For any three positive real numbers a, b and c,

9(25a^2+b^2)+25(c^2-3ac)=15b(3a+c)

. Then :

(1)b, c and a are in A.P.Official answer
(2)a, b and c are in A.P.
(3)a, b and c are in G.P.
(4)b, c and a are in G.P.

Official answer

Option 1

CBSE answer key (25/04/2017, used for result).

Chapter: Sequences and Series
Topic: AP and GP
Idea tested: Conditions for Three Terms in AP or GP

Same idea in other shifts

Asked 2× in all

7 Apr 2025, Shift 1 · Q6Let $x_1, x_2, x_3, x_4$ be in a geometric progression. If $2, 7, 9, 5$ are subtracted respectively from $x_1, x_2, x_3, x_4$ , then the…MediumSingle correct

Question text from the official JEE Main paper published by NTA (CBSE ran the 2017 exam); answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.