Mathematics · 2021
JEE Main · 25 February 2021, Shift 1 · Q76
The coefficients a, b and c of the quadratic equation, a x^2+ b x+ c =0 are obtained by throwing a dice three times. The probability that this…
The coefficients $\displaystyle \mathrm{a}, \mathrm{b}$ and c of the quadratic equation, $\displaystyle \mathrm{a} x^2+\mathrm{b} x+\mathrm{c}=0$ are obtained by throwing a dice three times. The probability that this equation has equal roots is :
Official answer
(4)
$\displaystyle \frac{5}{216}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.