/

Learn

Saturday, 31 October

/

JEE Main 2024 · MathsMultiple choiceSingle correctMediumMulti-step

JEE Main 5 April 2024, Shift 1, Maths Q19

Question 19 of 90 in this shift, Maths question 19 of 30, Section A.

The coefficients

a, b, c

in the quadratic equation

ax^2+bx+c=0

are chosen from the set

\{1,2,3,4,5,6,7,8\}

. The probability of this equation having repeated roots is :

(1) $\frac{3}{256}$
(2) $\frac{1}{128}$
(3) $\frac{3}{128}$
(4) $\frac{1}{64}$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Probability
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.