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Page-1, class: 12, Time : 1 hrs, Test - I, chaples - I, MaTKS : 50, Sub : Maths, I. Answer, any 4 of the following- (4x2=8), If, Square, matrix, has an in verse,, a, then it 15, unique ., Prove it, fird A, - 2, 20, If adj a =, -6, 6., matrin A, for which, 3., Find the, 5 3, A, -2, 1 -2 -1O, 3 -6 -3, A., Find, rank, 5., Sdve by, Cramers rule,, +2y = 12,, +3y=13, T., of the, following :-( 4× 3 = 12), Answel, any 4, 6., Sove by, Cramers ule, 1,-12 = 3,, 29,+3x2t AN3= 17,, 12+213=7, Solve by, matrin, inversion Method, 21-y =8, 3a+2y=-2, 80, Find the, rank, 2., 2., vivo S1 Pro