Normal type of MCQ with one correct option
The number of all possible matrices of order 3 × 3 with each entry 0 or 1 is
18
512
81
none of these
Normal type of MCQ with one correct option
A square matrix A is called idempotent if
A2 = I
A2 = O
2A = I
A2 = A
an invertible matrix
an idempotent matrix
a nilpotent matrix
none of these
Normal type of MCQ with one correct option
If A and B are symmetric matrices of the same order, then
AB is symmetric matrix
A(B is a skew-symmetric matrix
AB + BA is a symmetric matrix
AB ( BA is a symmetric matrix
/
A,B
B
C,D
A,B & D
(a2+b2c2)
(ab+bc+ac)
a2+b2 - c2
(a-c)(b-c).
/
A
B
C
A+B+C
2
-2
4
-4
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true