The coefficients \( a, b \) and \( c \) of the quadratic equation, \( a x^{2} \) \( +b x+c=0 \) ...

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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.
P The probability that this equation has equal roots is

W.
[JEE Main-2021 (February)]
(a) \( \frac{1}{54} \)
(b) \( \frac{1}{72} \)
(c) \( \frac{1}{36} \)
(d) \( \frac{5}{216} \)
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