Question # 1

Identify the equation whose roots are imaginary and unequal:

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2x²-x+1=0

x²+8x+16=0

3x²+4x+2=0

x²-7x+7=0

An equation involving impression of the variable under ______ is called radical equation:

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Second degree

Exponent

Radical

Cube

Cot 45^o =..................

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1

√2

1/√2

0

The radian measure of an angle that form a complete circle is.

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π/2

π

2π

4π

If the rotation of the rays is anti-clock wise, the angle has ________ measure:

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Positive

Radian

Standar

Negative

Tangent drawn at the ends of diameter of a circle of___________ to each other:

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parallel

perpendicular

collinear

none parallel

The number of methods to solve a quadratic equation is:

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1

2

3

4

Angles between 180^o and 270^o are to which quadrant?

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I

II

III

IV

Formula of variance is group data is:

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Two square roots of unity are:

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1,-1

The mean of the squared deviations of x1,(i = 1,2.........,n) observations from their arithmetic mean is called.....................

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Variance

Standard deviation

Range

Mode

Number of ways to solve quadratic equation are:

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1

2

3

4

Sum of the deviations of the variable "X" from its mean is always:

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Zero

One

Same

A data in the form of frequency distribution is called.

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Grouped data

Ungroup data

Same

None of these

Circles having three points in common will:

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Be perpendicular

Concide

Intersect

Be equal

Co sec 45^o = .................

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1

√2

1/√2

0

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