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  • Help me solve this - Matrices and Determinants - JEE Main-3

Whats the value of determinant \begin{vmatrix} 6& 3& 9\\ 2& 1 &3 \\ 5 & 8& 10 \end{vmatrix} ?

  • Option 1)

    10

  • Option 2)

    5

  • Option 3)

    8

  • Option 4)

    0

 

Answers (1)

best_answer

As we have learnt,

 

Property of determinant -

If each element in any row ( or any column ) of determinant is zero then the value of determinant is equal to zero.

-

 

 Operation R_1 \rightarrow R_1 - 3R_2

\begin{vmatrix} 0& 0& 0\\ 2& 1 &3 \\ 5 & 8& 10 \end{vmatrix} = 0 


Option 1)

10

Option 2)

5

Option 3)

8

Option 4)

0

Posted by

gaurav

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