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Class 12 Maths Practice Test - Elementary Operation of a Matrix
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Class 12 Maths Practice Test - Elementary Operation of a Matrix
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10 Questions

1. How many elementary operations are possible on Matrices?
2. The new matrix after applying the elementary operation R2→2R2+3R1 on the matrix A=\(\begin{bmatrix}2&5&4\\5&2&6\\7&2&1\end{bmatrix}\) is _____________
3. Which of the following elementary operations has been applied to the matrix A=\(\begin{bmatrix}8&5\\2&8\end{bmatrix}\) such that the new matrix is \(\begin{bmatrix}12&21\\2&8\end{bmatrix}\)?
4. Which among the following is the new matrix after applying the elementary operation C1→4C1 on the matrix A=\(\begin{bmatrix}5&8\\-1&2\\3&-4\end{bmatrix}\)?
5. Which of the following is not a valid elementary operation?
6. Which of the following matrices will remain same if the elementary operation R1→2R1+3R2 is applied on the matrix?
7. The following operation is applied on a matrix A=\(\begin{bmatrix}2&3\\6&4\end{bmatrix}\)
R1→R1+R2
Which of the following will be the resulting new matrix?
8. Which of the following column operation is incorrect for the matrix A=\(\begin{bmatrix}1&2&5\\6&3&8\end{bmatrix}\) ?
9. The following column matrix operations are applied on a column matrix A=\(\begin{bmatrix}-7&2&6\\-2&3&-5\\2&1&3\end{bmatrix}\)
C2→2C1+C2
C3→3C1+2C3
Which among the following will be the new matrix?
10. The following elementary operations are applied to the matrix A=\(\begin{bmatrix}4&5&2\\6&7&1\\3&9&5\end{bmatrix}\)
R1→2R1+3R2
R2→3R2-2R3
Which among the following will be the new matrix?

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