If A=[ai j]3 × 4 is matrix given by A=[ 4 -2 1 3 5 7 9 6 21 15 18 -25 ] Then, a23+a24 will be equal to the element

Question

If A=[ai j]3 × 4 is matrix given by A=[ 4 -2 1 3 5 7 9 6 21 15 18 -25 ] Then, a23+a24 will be equal to the element (A) a14 (B) a44 (C) a13 (D) a32

Tardigrade Admin · Accepted Answer

The given matrix is A=[4 -2 1 3 5 7 9 6 21 15 18 -25]. Here, a23=9 and a24=6 ∴ a23+a24=15 Also, 15 lies in 3 text id row and 2 text nd column. ∴ 15=a32

Q. If $A = [a_{ij}]_{3 \times 4}$ is matrix given by
$A = ⎣ ⎡ 4521 - 2 715 1918 36 - 25 ⎦ ⎤$
Then, $a_{23} + a_{24}$ will be equal to the element

$a_{14}$

$a_{44}$

$a_{13}$

$a_{32}$

The given matrix is $A = ⎣ ⎡ 4521 - 2 715 1918 36 - 25 ⎦ ⎤$ .
Here, $a_{23} = 9$
and $a_{24} = 6$
$∴ a_{23} + a_{24} = 15$
Also, 15 lies in $3^{id}$ row and $2^{nd}$ column.
$∴ 15 = a_{32}$

Q. If A=[aij​]3×4​ is matrix given by A=⎣⎡​4521​−2715​1918​36−25​⎦⎤​ Then, a23​+a24​ will be equal to the element

a14​

a44​

a13​

a32​