If det `A = 4` and A is of order `3 xx 3,` then find the value of det (3A).

Write down the value of det (2I_(3)) .

Find of the value of : 11^3

If A is square matrix of order 3, then find the value of |A| + |-A|.

If A and B are square matrices of order 3 such that |A| = -1 and |B| = 3, then find the value of |3AB|.

Find of the value of : 2xx10^3

Let A be a square matrix of order 3 xx 3 . Write the value of |2A|, where |A| = 4.

Answer the question If A is a matrix of a order 2 xx 3 and B is a matrix of order 3 xx 5, then what is the order of matrix (AB)' or (AB) ^(T) ?

If Var(x) = 4, Find the value of Var (3x + 2).

If A is a matrix of order 5 xx 5 and det A = 1, then find det (-A).

Let A be a matrix of order 3, such tha |A|=-9 . Find the value of |-3A^(-1)| .