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The bookshop of a particular school has ...

The bookshop of a particular school has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs. 80, Rs. 60 and Rs. 40 each respectively. Find the total amount the bookshop will receive from selling all the books using matrix algebra.

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The correct Answer is:
Rs. 20,160
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OMEGA PUBLICATION-MATRICES -MULTIPLE CHOICE QUESTIONS
  1. The bookshop of a particular school has 10 dozen chemistry books, 8 do...

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  2. Assume X, Y, Z, W and P are matrices of order 2xxn, 3xxk, 2xxp, nxx3 ...

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  3. Assume X, Y, Z, W and P are matrices of order 2xxn, 3xxk, 2xxp, nxx3 ...

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  4. A=[a(ij)](mxxn) is a square matrix, if a. m < n b. m > n c. m ...

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  5. Which of the given values of x and y make the following pair of matric...

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  6. If A=[(cosalpha,-sinalpha),(sinalpha,cosalpha)], then A+A'=1, if the v...

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  7. Matrices A and B will be inverse of each other only if a. AB = BA ...

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

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  9. If the matrix A is both symmetric and skew symmetric, then :

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  10. If A is square matrix such that A^(2)=A, then (I+A)^(3)-7A is equal to...

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  11. If A = [ a(ij)]("mxn") is a rectangular matrix, then

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  12. If A,B symmetric matrices of the same order. Then AB-BA is a a. Ske...

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

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  14. If A matrix is symmetric as well as skew symmetric, then a. A is dia...

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  15. Matrices A and B will be inverse of each other only if a. AB = BA ...

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  16. Assume X, Y, Z, W and P are matrices of order 2xxn, 3xxk, 2xxp, nxx3 ...

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  17. Assume X, Y, Z, W and P are matrices of order 2xxn, 3xxk, 2xxp, nxx3 ...

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  18. A=[a(ij)](mxxn) is a square matrix, if a. m < n b. m > n c. m ...

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  19. Which of the given values of x and y make the following pair of matri...

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  20. If A=[(cosalpha,-sinalpha),(sinalpha,cosalpha)], then A+A'=1, if the v...

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

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