Question # 1

In a quadratic equation with leading co-efficient 1, a student reads the co-obtain the roots as - 15 and -4. The correct roots are

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6, 10

-6, -10

8, 8

-8, -8

If for the matrix A, A⁵= I, then A^-1=

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A²

A³

A

None of above

∀x, y ∈ R, either x = y or x > y or x < y is

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Transitive property

Reflexive property

Trichotomy property

None of these

Two circles are said to be concentric if they have

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same radius

same chord

same centre

same diameter

The unit vector along x-axis is

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none of these

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Power set of X i.e P(X)..........under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

The lotus of intersection of perpendicular tangents to the parabola y² = 4ax is:

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Axis of the parabola

Focal chord of the parabos

The tangent at vertex of the parabola

a directrix of the parabola

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

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The set of integer is

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Finite group

A group w.r.t addition

A group w.r.t multiplication

Not a group

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