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If A=[[3, 1], [4, 5]], then R1 harrR2 on...

If `A=[[3, 1], [4, 5]]`, then `R_1 harrR_2` on A gives

A

`[[3, 4], [1, 5]]`

B

`[[4, 5], [3, 1]]`

C

`[[1, 3], [5, 4]]`

D

`[[5, -1], [-4, 3]]`

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The correct Answer is:
B
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NIKITA PUBLICATION-MATRICES-MULTIPLE CHOICE QUESTIONS
  1. If A=[[0, 1, -2], [-1, 0, 5], [2, -5, 0]], then

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  2. If A=[[1, 0], [-1, 3]], then R1 harr R2 on A gives

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  3. If A=[[3, 1], [4, 5]], then R1 harrR2 on A gives

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  4. If A=[[5, 4], [1, 3]], then C1 harr C2 on A gives

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  5. If A=[[1, 0, 2], [2, 4, 5]], then 3R1 on A gives

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  6. If A=[[1, 2, -1], [0, 1, 3]], then 2C2 on A gives

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  7. If A=[[1, 0, 2], [2, 4, 5]] and B=[[1, 2, -1], [0, 1, 3]], then the ad...

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  8. If A=[[1, -1, 3], [2, 3, 4]], then R1 to R1 -R2 on A gives

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  9. If A=[[1, 0, 2], [2, 3, 4]], then C1 to C1 +C3 on A gives

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  10. If A=[[1, 2, -1], [3, -2, 5]], then first R1 harr R2 and then C1 to C1...

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  11. IfA==[[1, -1, 3], [2, 1, 0], [3, 3, 1]], then first 3R3 and then C3 to...

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  12. The co-factor of -4 and 9 in [[-1, -2, 3], [-4, -5, -6], [-7, 8, 9]] ...

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  13. The co-factor of elements of the second row of [[1, 2, 3], [-4, 3, 6],...

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  14. If A=[[5, 6, 3], [-4, 3, 2], [-4, -7, 3]], then co-factor of the eleme...

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  15. The co-factors of the elements of second row of the [[1, 3, -2], [4, -...

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  16. The co-factors of the elements of third row of [[1, -1, 2], [3, 1, 4],...

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  17. The co-factors of the elements of the first column of [[1, 1, -2], [2,...

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  18. The co-factors of the elements of third column of [[4, 3, 1], [1, 3, 2...

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  19. If A=[[1, 2, 3], [2, 3, 2], [1, 2, 2]], then

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  20. Matrix of co-factors of the matrix [[-1, 2],[ -3, 4]] is

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