Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Matrices

Question:

Which of the following statements is incorrect regarding matrices ?

For any matrices A and B of suitable orders,

Options:

$(A')'=A$

$(KA)'=KA'$ (Where K is any constant)

$(A+B)'=B'+A'$

$(AB)'=A'B'$

Correct Answer:

$(AB)'=A'B'$

Explanation:

The correct answer is option (4) → $(AB)'=A'B'$

only last one is incorrect

as $(AB)'=B'A'$ (NOT $A'B'$)