MatricesHard

Question

If A is a 3 × 3 matrix such that |5.adjA| = 5, then |A| is equal to :

Options

A.± 1/5
B.± 1/25
C.± 1
D.± 5

Solution

125 |A|2 = 5
|A| = ± 1/5

Create a free account to view solution

View Solution Free
Topic: Matrices·Practice all Matrices questions

More Matrices Questions

If A = , then AA′ equals -...If 2A + B = and A − B = , then A =...Matrix A = , if xyz = 50 and 8x + 4y + 3z = 30 then A (adj A) is equal to:-...Matrices are formed using four given distinct real numbers, taking all at a time, of all possible orders. Number of such...Matrix is not invertible if -...