Question # 1

The value obtained by reciprocating the mean of the reciprocal of x₁,x₂,x₃..............x₁₁ observation is called....................

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Geometric mean

Median

Harmonic mean

S.D

If (x+1)(7x+1) = 0 then x is equal to:

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Cto 60^o=.................

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1/2

√3/2

√3

1/√3

An angle which is equal to 90° is called:

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right angle

obtuse angle

acute angle

none of these

The nth positive root of the product of the x₁,x₂,x₃,..............x₁₁ observation is called.

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Mode

Mean

Geometric mean

Median

A frequency polygon is a many sided:

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Closed figure

Rectangle

Square

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

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parallel

perpendicular

collinear

none parallel

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The length of a tangent to a circle is from the given point to the point of:

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start point

enc points

contact

collinear

The domain of {(a,b),(b,c),(c,d)} is............

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{a,b,c}

{b,c,d}

{a,b}

{a,b,c,d}

In ax²+b+c, the constant term is:

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a

b

c

d

Quadratic equation is also known as equation of:

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Standard form

Polynomials

Second degree

Higher order

The system of measurement in which angle is measured in radian is called.

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C.G.S System

Sexagesimal system

M.K.S.System

circular system

An arc subtends a central angle of 40° then the corresponding chord will subtend a central angle of:

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20°

40°

60°

80°

Sec 270° =

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0

1

-1

Not defined

Geometry means measure of the:

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Earth or Straight line

Earth or Land

Triangle or Polygon

Earth or Point

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