If `I_n` is the identity matrix of order n then `(I_n)^(-1)=`

If I_(3) is identity matrix of order 3, then I_(3)^(-1)=

If I_(3) is identity matrix of order 3, then I_(3)^(-1)=

If I_n is the identity matrix of order n, then rank of I_n is

If I is unit matrix of order n, then 3I will be

Let A=[[0,10,0]] show that (aI+bA)^(n)=a^(n)I+na^(n-1)bA where I is the identity matrix of order 2 and n in N

If A^(5) is null square matrix and A^(3)!=0 and (I-A) is the inverse of matrix I+A+A^(2)+.........+A^(n) , then possible value of n can be ( I is the identity matrix of same order as that of A )

Let A = [[0,1],[0,0]] , show that (aI + bA)^n = a^nI + na^(n-1) bA , where I is the identity matrix of order 2 and n in N