Question # 1

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A parabola

An ellipse

A hyperbola

A circle

The n numbers A₁,A₂,A₃,.....A_nare called an arithmetic means between a and b if a.A₁,A₂,A₃.....A_n, b is ______

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An arithmetic series

An arithmetic sequence

A geometric sequence

A harmonic sequence

The sum of an indicated number of terms in a sequence is called

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sequence

progression

Series

Mean

A right angle is the angle of measure

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90'

60°

60"

90°

The identity element with respect to subtraction is

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0

-1

0 and 1

None of thes

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sec x tan x

cos²x

sin²x

sec²x

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If a, b, c, d, e, f are in A.P.,then e-c is equal to

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2(c - a)

2(f - d)

2(d - c)

d - c

If a +b +c =0 then which of the following is true

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a =b =c =0

a,b =b,c =c,a

a xb=b xc =c xa

None

Which of the following is the subset of all sets?

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Every irrational number is

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A real number

A prime number

A natural number

An integer

If a plane passes through the vertex of a cone then the intersection is

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an ellipse

a hyperbola

a point circle

a parabola

Number of conics is

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1

3

2

4

If cos 20°=K and cos x=2 k²-1, then the possible values of x between 0° and 360° are

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140°

50° and 140°

50° and 130°

40° and 320°

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A prime number

An integer

A whole number

An irrational number

Express as a sum or difference: 2 sin 5θcosθ

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cos 4θ- cos 2θ

sin 4θ+ sin 2θ

cos 4θ+ cos 2θ

sin 4θ- sin 2θ

Domain of cos x is ______

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π is ______

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A complex number

A rational number

A natural number

An irrational number

Every term of a G.P. is positive and also every term is the sum of two preceding terms. Then the common ratio of the G.P. is

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Given X,Y are any two sets such that number of elements in set X = 28, number of elements in set Y = 28, and number of elements in set X∪Y = 54, then number of elements in set X ∩ Y =

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4

3

2

1

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(1, 3)

(-1, -3)

(1, -3)

(-1, 3)

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R

2R

r

2r

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none of these

In a country, 55% of the male population has houses in cities while 30% have houses both in cities and in village. Find the percentage of the population that has house only in villages.