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The number of all possible matrices of o...

The number of all possible matrices of order `2xx3` with each entry 1 or -1 is

A

32

B

12

C

6

D

64

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The correct Answer is:
D
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AAKASH INSTITUTE-MATRICES-Assignment (Section - A) Objective Type Questions (One option is correct)
  1. Let A be 5xx8 matrix, then each column of A contains

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  2. If A is matrix of order 10xx15, then each row of A contains

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  3. The number of all possible matrices of order 2xx3 with each entry 1 or...

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  4. If A is of order mxxn and B is of oredr pxxq, then AB is defined only ...

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  5. Question 1: If P is of order 2 x 3 and Q is of order 3 x 2, then P...

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  6. If A={:[(0,0,0),(0,0,0),(1,0,0)]:}, then

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  7. If A is a square matrix, then A is symmetric, if

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  8. If A is a square matrix, then A is skew symmetric if

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  9. If A is any square matrix, then A + A^T is skew symmetric

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  10. If A and B are symmetric matrices of the same order then (AB-BA) is al...

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  11. Let A be a square matrix. Then which of the following is not a symmetr...

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  12. Each diagonal elemetn of a skew symmetric matrix is (A) zero (B) negat...

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  13. If A={:[(1,0),(1,1)]:},"then "A^(2008) is equal to

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  14. If A=[ x y z],B=[(a,h,g),(h,b,f),(g ,f,c)],C=[alpha beta gamma]^T th...

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  15. if for a matrix A, A^2+I=O, where I is the identity matrix, then A equ...

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  16. If A and B are two matrices such that AB=B and BA=A, then

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  17. If {:A+B=[(1,0),(1,1)]andA-2B=[(-1,1),(0,-1)]:}," then "A=

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  18. {:[(7,1,2),(9,2,1)]:}{:[(3),(4),(5)]:}+2{:[(4),(2)]:} is equal to

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  19. If f(x)=x^(2)+4x-5andA={:[(1,2),(4,-3)]:}, then f(A) is equal to

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  20. Multiplicative inverse of the matrix [[2,1],[7,4]] is (i) [[4,-1],[-7...

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