Rank of a non zero matrix is always (A) 0 (B) 1 (C) `gt1` (D) `gt0`

Rank of a 3*3 matrix C(=AB), found by multiplying a non-zero column matrix A of size 3*1 and a non-zero row matrix B of size 13, is (a) 0 (b) 1 (c) 2 (d) 3

Find the rank of the matrix A = [(1,1),(0,0)]

Find the rank of the matrix A = [(1,0),(0,1)]

|z-i|lt|z+i| represents the region (A) Re(z)gt0 (B) Re(z)lt0 (C) Im(z)gt0 (D) Im(z)lt0

|z-i|lt|z+i| represents the region (A) Re(z)gt0 (B) Re(z)lt0 (C) Im(z)gt0 (D) Im(z)lt0

If A and B are independent events such that P(A) gt0, P(B) gt 0 , then

If A and B are independent events such that P(A) gt0, P(B) gt 0 , then

If A is a non - zero matrix of order 3times3 ,If A is singular and at least one of the 2times2 sub matrix is non-singular then the rank of A is a)1 b)2 c)3 d)0

For a gt b gt c gt 0 , if the distance between (1,1) and the point of intersection of the line ax+by-c=0 and bx+ay+c=0 is less than 2sqrt2 then, (A) a+b-cgt0 (B) a-b+clt0 (C) a-b+cgt0 (D) a+b-clt0