Question # 1

A variable which is free to take any value we choose to assign to it is called.

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Dependent variable

Independent variable

Endogenous variable

Explained variable

If every elements of a raw or column of a square matrix A is zero, then the value of the determinant .

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Equal

Zero

One

Negative related

If every element of a set B is also an elements of A then

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A is a subset of B

B is a subset of A

A is not a subset of B

B is not a subset of A

For any square matrix A of order 'n' a +A is.

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Skew symmetric

Non skew symmetric

Symmetric

Non symmetric

a possible use in encomia's for the circle or the ellipse is to model.

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Production possibility curve

Demand cuve

Isocost liine

Supply curve

Which method is used for finding inverse of a matrix.

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Gauss elimination method

Henrich standard method

Co factor method

Both a and c

A set totality of elements from all possible sets is called.

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Union set

Intersection set

Universal set

Unit set

The set which contains all the element of the two given sets A and B, avoiding duplication, is called.

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Intersection of A and B

Union of A and B

Set A and B

None of these

In a matrix , if there is only one row but any number of columns, it is called.

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Row matrix

Column matrix

Raw vector

Both a and c

The point at which the graph cuts the x axis is called.

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x- intercept

y - intercept

slope

None of these

Union of A and a null set is equal is.

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Intersection of A and null set

Null set

Both a and b

A

if A = A , then A is

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Symmetric matrix

Skew symmetric matrix

Identity matrix

Orthogonal matrix

Union of A with B is same as union of B with A, that is AUB = BUA is termed as

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Associative law of union

Cumulative law of union

Reflective law

All the above

A polynomial equation with degree two a called.

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Linear equation

Quadratic equation

Parabola equation

All of the above

The variable that stands alone on the left hand side of the equation such as y = 2x + 1 is known as.

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Dependent variable

Independent variable

Endogenous variable

Explained variable

A set containing only one element is termed as

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Unit set

Singleton set

Both a and b

None of these

The set of all elements belonging to A but not to B is.

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B - A

A - B

A'

B'

If the columns of a given matrix A and B are changed into rows and vice versa, the matrix thus obtained is called the.

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Symmetric matrix

Transpose of a matrix

Singular matrix

Rank of matrix

The signed minor of the matrass A is called.

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Adjoin

Co factor

Minor

Rank

A linear function of the form 6x2 - 2y + 8 = 0 is known as.

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Explicit function

implicit function

Quadratic function

All of the above

The objects constituting a set are called

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Estimates

Elements

Set object

Noe of these

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