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If A is a `(x + 2) × (y - 3)` matrix and B is a `2 × 5` matrix AB is a `3 × 5`,then values of x and y are

A

`5,1`

B

`2,3`

C

`1,5`

D

`3,2`

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The correct Answer is:
C
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JMD PUBLICATION-MATRICES-EXERCISE
  1. The number of all positive matrices of order 3 × 3 with each entry 0 o...

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  2. If A is 3 × 4 matrix and B is 4 × 3 matrix,then the order of AB is

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  3. If A is a (x + 2) × (y - 3) matrix and B is a 2 × 5 matrix AB is a 3 ×...

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  4. If [[4,3],[x,5]] = [[y,3],[1,5]] ,then x^2 + y^2 =

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  5. If A is of order 3 × 4 and B is of order 4 × 2,then order of AB is

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  6. If A is of order 3 × 2 and B is of order 3 × 4,then order of (AB)' is

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  7. If A = [[0,a,3],[2,b+2,-1],[-3,1,0]] is skew symmetric, then 2a + b =

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  8. If A,B are symmetric matrices of the same order,then AB - BA is

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  9. Matrices A and B will be inverse of each other if

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  10. If A = [1,2,3] and B = [[2],[4],[6]],then AB is

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  11. State True/False: If A is a symmetric matrix ,then A' = -A

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  12. State True/False: Every rectangular matrix can be expressed as sum of ...

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  13. State True/False: If A is of order 2 × 3 and B is of order 3 × 4,then ...

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  14. If (A =[[2,3],[4,5]]), prove that A-A' is a skew symmetric matrix wher...

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  15. IF(A=[[3,-4],[-1,2]]), find a matrix B such thet (AB = 1)

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  16. Construct a (2 times 2) matrix where (a(ij)=(i+(2)j)^(2)/(4))

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  17. If (A=[[3,-2],[4,-2]]), find K such that (A^2=KA - 2I2).

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  18. Find x and y, if (2[[1,3],[0,x]]+[[y,0],[1,2]]=[[5,6],[1,8]])

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  19. Show that the matrix BAB) is symmetric or skew symmetric according as ...

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  20. For the matrix (A=[[-3,6,0],[4,-5,8],[0,-7,-2]]), find (1/2(A-A')), wh...

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