CBSE Important Questions of Matrices | Zigya

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 Multiple Choice QuestionsShort Answer Type

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1.

Consider the following information regarding the number of men and women workers in three factories I. II and III

 

Men Workers

Women Workers

I

30

25

II

25

31

III

27

26

Represent the above information in the form of a 3 x 2 matrix. What does the entry in the third row and second column represent ?

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2.

In the matrix straight A equals open square brackets table row 2 5 19 cell negative 7 end cell row 35 cell negative 2 end cell cell 5 over 12 end cell 12 row cell square root of 5 end cell 1 cell negative 5 end cell 17 end table close square brackets. space Write

(i) The order of the matrix
(ii) The number of elements,
(iii) Write the elements a13,a21 a33 a24’ a23

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3.

If a matrix has 8 elements, what arc the possible orders it can have ?

 
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4.

If a matrix has 24 elements, what are the possible orders it can have? What, if it has 13 elements?

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5.

If a matrix has 18 elements, what are the possible orders it can have? What, if it has 5 elements?

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6. If a matrix A has 12 elements, what arc the possible orders it can have 7 What if it has 7 elements ?
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7. Construct a 3 x 3 matrix w'hose elements are giv en by a,1, = 2 i – 3 j
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8. Construct a 3 x 4 matrix whose elements are

ai  j = i +J  
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9. Construct a 3 x 4 matrix whose elements are

ai  j = i –J
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10. Construct a 3 x 4 matrix whose elements are

ai j = i.j
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