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## ISI MStat PSB 2006 Problem 1 | Inverse of a matrix

This is a very beautiful sample problem from ISI MStat PSB 2006 Problem 1 based on Inverse of a matrix. Let’s give it a try !! Problem- ISI MStat PSB 2006 Problem 1 Let A and B be two invertible $n \times n$ real matrices. Assume that $A+B$ is invertible....

## ISI MStat PSB 2007 Problem 2 | Rank of a matrix

This is a very beautiful sample problem from ISI MStat PSB 2007 Problem 2 based on Rank of a matrix. Let’s give it a try !! Problem- ISI MStat PSB 2007 Problem 2 Let $A$ and $B$ be $n \times n$ real matrices such that $A^{2}=A$ and $B^{2}=B$Suppose...

## ISI MStat PSB 2010 Problem 1 | Tricky Linear Algebra Question

This is a very beautiful sample problem from ISI MStat PSB 2010 Problem 1 based on Matrix multiplication and Eigen values and Eigen vectors . Let’s give it a try !! Problem- ISI MStat PSB 2010 Problem 1 Let $A$ be a $4 \times 4$ matrix with non-negative...