Q. The sum of the products of the elements of any row of a determinant $A$ with the cofactors of the corresponding elements is equal to
A) 1
B) 0
C) $|A|$
D) $\frac{1}{2}|A|$
Explanation
(c)
We know that the sum of the products of the elements of a row with the cofactors of the corresponding elements is always equal to the value of the determinant .$ie,|A|.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.