Question # 1

In class (30-39), lower class limit is....

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39

9

30

34.5

The different number of ways to describe a set are:

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1

2

3

4

O∪ E = ................

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∅

O

E

Z

The mean of the squared deviations of X observations from their arithmetic mean is called.

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Variance

Standard deviation

Range

Harmonic mean

A straight line, drawn from the centre of a circle to bisect a chord is _______ to the chord:

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Parallel

Equidistant

Perpendicular

Congruent

Perpendicular from the centre of a circle on a _______ bisects it:

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Segment

Arc

Sector

Chord

The most frequently occurring observation in a data set is called.

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Mode

Median

Harmonic mean

Mean

Sum of deviations of the variable X from its mean is always_____________

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Zero

One

Same

None

A Deviation is defined as a difference of any value of the variable from a:

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Constant

Histogram

Sum

A tangent to a circle is perpendicular to the radial segment drawn to the point of:

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Contact

Tangency

Concurrency

Tangent

An angle inscribed in a semicircle is:

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r₁

r₂

r₃

r

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a is an element of a set A

a is subset of A

a is a whole number

a contains A

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irrational fraction

polynomial

rational fraction

none of these

The amplitude and period of 3 sin x are:

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3, π

2, 2π

3, 3π

3, 2π

Which one is exponential equation:

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ax² + bx + c = 0

ax + b = 0

2^x = 16

Tan (294°) =

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tan24°

-tan24°

cot24°

-cot24°

Numbers are formed by using all the digits 1, 2, 3, 4, 5, 6 on digit being repeated, then the numbers which are divisible by 5 are:

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110

120

122

124

1° is equal to:

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If α, ß are complex cube roots of unity, then 1 + αⁿ + ßⁿ = .......... where n is a positive integer divisible by 3:

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1

3

2

4

The period of sec 2x is:

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If equation of circle is (x - h)² + (y - k)² = r², then center of a circle:

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(-h, -k)

(h, k)

(-h, k)

(h, -k)

If a = 0, then the line ax + by + c = 0 is parallel to:

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y - axis

x - axis

along y - axis

None of these

Perpendicular dropped from the center of a circle on a chord _______ the chord:

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Normal

Bisects

Equal to

None of these

tanh x =

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Two arcs of two different circles are congruent if:

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The circles are congruent

The corresponding central angles are congruent

Both a and b

None of the above

y² = 4ax, is the standard equation of the:

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Ellipse

Parabola

Hyperbola

None of these

The function y = ln x is a/an -------------- function of x.

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Constant

Explicit

Exponential

Logarithmic

Which are the following triples can be direction angles of a single vector:

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45°,45°,60°

30°,45°,60°

45°,60°,60°

30°,30°,30°

The feasible region is ________ if it can easily by enclosed within a circle.

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Bounded

Exist

Unbounded

None of these

Let f(x) = x², real valued function then domain of f is the set of all:

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Real numbers

Integers

Positive numbers

Natural numbers

The directrix of the parabola y² = 4ax is:

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x = a

x = -a

y = a

y = - a

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