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If A is a 2xx3 matrix and B is a 3xx4 ma...

If A is a `2xx3` matrix and B is a `3xx4` matrix ,how many columns does AB have

A

3

B

4

C

2

D

5

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The correct Answer is:
B
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NCERT TAMIL-ALGEBRA -Exercise 3.19
  1. A system of three linear equations in three variables is inconsistent ...

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  2. The solution of the system x+y-3x=-6,-7y+7z=7,3z=9 is

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  3. If (x-6) is the HCF of x^(2)-2x-24andx^(2)-kx-6 then the value of k is

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  4. (3y-3)/(y)div(7y-7)/(3y^(2))is

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  5. y^(2)+(1)/(y^(2)) is not equal to

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  6. (x)/(x^(2)-25)(8)/(x^(2)+6x+5) gives

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  7. The square root of (256x^(8)y^(4)z^(10))/(25x^(6)y^(6)z^(6)) is equal ...

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  8. Which of the following should be added to make x^(4)+64 a perfect squa...

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  9. The solution of (2x-1)^(2)=9 is equal to

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  10. The values of a and b if 4x^(4)-24x^(3)+76x^(2)+ax+b is a perfect squa...

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  11. If the roots of the equation q^(2)x^(2)+p^(2)x+r^(2)=0 are the squares...

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  12. Graph of a linear polynomial is a

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  13. The number of points of intersection of the quadratic polynomial (x+2)...

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  14. For the given matrix A=({:(1,3,5,7),(2,4,6,8),(9,11,13,15):}) the orde...

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  15. If A is a 2xx3 matrix and B is a 3xx4 matrix ,how many columns does AB...

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  16. If number of columns and rows are not equal in a matrix then it is sai...

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  17. Transpose of a column matrix is

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  18. Find the matrix X if 2X+({:(1,3),(5,7):})=({:(5,7),(9,5):})

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  19. Which of the following can be made from the given matrices A=({:(1,2),...

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  20. If A=({:(1,2,3),(3,2,1):}),B=({:(1,0),(2,-1),(0,2):})andC=({:(0,1),(-2...

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