CBSE Class 12 Maths 2010 Solved Paper

Question : 7 of 29

Marks: +1, -0

Find the minor of the element of second row and third column (

a_{23}

) in the following determinant:

|\table 2,-3,5;6,0,4;1,5,-7|

Solution:

Given determinant =

|\table 2,-3,5;6,0,4;1,5,-7|

Minor of the element

a_{23}

M_{23}

Obtained by deleting III column and II row

M_{23}

|\table 2,-3;1,5|

= 10 - (- 3)
= 13

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