[" 10.If "A" and "B" are invertible matrices,which one of the following statements is not correct? "],[[" 1) "Adj.A=|A|A^(-1)," 2) det "A^(-1)" ) "=|" det "(A)|^(-1)],[" 3) "(A+B)^(-1)=B^(-1)+A^(-1)," 4) "(AB)^(-1)=B^(-1)A^(-1)]]