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Algebra

Quick practice

Question 1 of 5

If and $A_{i j}$ denotes the cofactor of element $a_{i j}$ , then $a_{11} A_{21}+a_{12} A_{22}+a_{13} A_{23}=$

A

$-|\mathrm{A}|$

B

$2|\mathrm{A}|$

C

$true$

D

0

Concepts

Matrices

Sequence and Series

Statistics

Probability

Binomial Theorem & Its Distribution

Probability Distribution