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Saturday, 31 October

JEE Main 2023 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 12 April 2023, Shift 1, Maths Q28

Question 28 of 90 in this shift, Maths question 28 of 30, Section B.

Two circles in the first quadrant of radii r1r_1 and r2r_2 touch the coordinate axes. Each of them cuts off an intercept of 22 units with the line x+y=2x+y=2. Then r12+r22−r1r2r_1^2+r_2^2-r_1r_2 is equal to__________.

Official answer

7

NTA final key.

Chapter
Conic Sections
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.