[Solved] Suppose \\begin{bmatrix}a & a^2 & b^2 & -1 \\\\\\b & b^2 & b^3 & -1 \\\\\\ c & c^2 & c^3 & -1 \\end{bmatrix}=0, where a, b and c care distince real numbers. If a = 3, then the value of abc is ________________. - - IPM Indore 2020