Question # 1

π/3 radians =..............................................

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30^o

45^o

60^o

90^o

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

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Harmonic mean

Range

S.D

Variance

E - O = ..................

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∅

O

E

Z

In equation 5^1+x+5^1-x = 26, we put:

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5^2x=y

5^1+x=y

5^1-x=y

5^x=y

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

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

Sin 60^o = ................

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1/2

√3/2

2

2/√3

1+Cot² θ

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Sin²θ

Cos²θ

Cosec² θ

Sec²θ

Roots of the equation 4x²-4x+1=0 are:

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Real, equal

Real, uneqal

Imaginary

Irrational

Cotθ = __________

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Sinθ/cosθ

1/cosθ

Cosθ/Sinθ

1/sinθ

The sum of the squares of sides of a rhombus is equal to the sum of the squares of its:

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Sides

Diagonlas

Medians

Altitude

The geometric mean of the a observations 2,4,8, is:

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2

8

4

no geometric mean

The measure of the external angles of a regular hexagon is:

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If b²-4ac > 0 and is not a perfect square, then roots are:

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Rationaland unequal

Irrationaland equal

Rationaland equal

Irrationaland unequal

Angle inscribed in a semi-circle is:

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The mode in the data 1,3,5,3,7,9

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1

3

5

7

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