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If {:[(x+y,1),(2y,5)] = [(7,1),(4,5)], f...

If `{:[(x+y,1),(2y,5)] = [(7,1),(4,5)]`, find 'x'

A

`6`

B

`4`

C

`5`

D

`2`

Text Solution

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The correct Answer is:
C
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ACCURATE PUBLICATION-MATRICES-QUESTIONS CARRYING 1 MARK (Type-I : (Multiple choice questions))
  1. If {:[(x+y,1),(2y,5)] = [(7,1),(4,5)], find 'x'

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  2. If [[2x-y,5],[3,y]] = [[6,5],[3,-2]], then x equals :

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  3. The matrix A= [[1,2],[0,1]] is equal to:

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  4. The matrix A= [[1,3],[0,1]] is equal to:

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  5. The number of all possible matrices of order 3xx3 with each entry 0 o...

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  6. The number of all possible matrices of order 3xx3 with each element 0 ...

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  7. If matrix A is of order 4 xx 3, then each row of matrix A contains ele...

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  8. If A + B = C, where A and B are matrices of order 2 xx 3, then order o...

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  9. If A + B = C, where A and B are matrices of order 3 xx 5, then order o...

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  10. If A+ B = C where B and A are matrices of order 5xx5 then the order of...

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  11. If X = [[2,0],[0,4]] and Y = [[-2,0],[-2,0]] then X + Y equal to :

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  12. If A is matrix of a order 2 xx 3 and B is a matrix of order 3 xx 2, t...

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  13. If A is matrix of a order 2 xx 3 and B is a matrix of order 3 xx 2, t...

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  14. If AB = C, where B and C are matrices of order 3 xx 5, then order of A...

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  15. AB = C, where B and C are matrices of order 3 xx 4, then order of A is...

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  16. If AB = C, where B and C are matrices of order 4 xx 5, then the order ...

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  17. If AB = C where Band C are matrices of orders 5xx3 then order of A is ...

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  18. If A = [(1,2,3)] , B = [(2),(3),(1)], then AB equals

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  19. If A = [(2,1,3)] , B = [(3),(2),(1)] then AB equals

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  20. If A=[(alpha,beta),(gamma,-alpha)] is such that A^(2)=I, then a. 1 ...

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