[Solved] Let S be the sample space of all 3 \\times 3 matrices with entries from the set {0,1}. Let the events E_1 and E_2 be given by E_1 = \\left\\\\{A \\in S : \\det A = 0\\right\\\\} and E_2 = {A \\in S : sum of entries of A is 7}. If a matrix is chosen at random from S, then the conditional probability P(E_1|E_2) equals _______ - - JEE (Advanced) 2019 Paper-1