The number of `2xx2` matrices `A`, that are there with the elements as real numbers satisfying `A+A^(T)=I` and `A A^(T)=I` is

The number of 2 xx 2 matrices having elements 0 and 1 is

The number of complex numbers satisfying (1 + i)z = i|z|

The number of 2xx2 matrices A with real entries, such that A+A^(T)=3I and A A^(T)=5I , is equal to

The number of 2xx2 matrices A with real entries, such that A+A^(T)=3I and A A^(T)=5I , is equal to

What is the real part of the number 15 + 2i

The number of complex numbers z satisfying |z-2-i|=|z-8+i| and |z+3|=1 is

The number of 2xx2 matrices X satisfying the matrix equation X^2=I ( I i s2xx2 u n i t m a t r i x)

The number of matrices X with entries {0,2,3} for which the sum of all the principal diagonal elements of X.X^(T) is 28 (where X^(T) is the transpose matrix of X), is

The number of matrices X with entries {0,2,3} for which the sum of all the principal diagonal elements of X.X^(T) is 28 (where X^(T) is the transpose matrix of X), is