Question # 1

Probability of an impossible event is

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0

-1

1

∞

x = ________ is in the solution of 2x + 3 > 0

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1

-2

-3

-4

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none of these

The element range of sequence are called

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Series

progression

Members

Terms

An observer on the top of a cliff 200 m above the sea level, observes the angles of depression of two ships on opposite sides of the cliff to be 45° and 30°, respectively. The distance between the ships if the line joining them points to the base of cliff is

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The equation of the directrix of the parabola x²= 4ay is

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x + a = 0

x - a = 0

y + a = 0

y - a = 0

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sin h x

cos h x

tan h x

cot h x

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1 + tan²x + c

tan x + c

-tan x + c

cot x + c

What is the conjugate of -7 -2i ?

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-7 + 2i

7 +2i

7 -2i

√53

n(n - 1) (n - 2) in factorial form is

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An equation which hold good for all values of the variables is called

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Identity

fraction

mixed form

Partial equation

The set {-1,1} is closed under the binary operation of

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Addition

Multiplication

Subtraction

Division

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0

1

undefined

Three integers are chosen at random from the first 20 integers. Then probability that their product is even, is

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2 / 19

3 / 29

17 / 19

4 / 19

By expressing cos 113° in terms of trigonometrical ratios, answer will be

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− cos 76° = -0.7093

− cos 65° = -0.4258

− cos 67° = -0.3907

− cos 62° = -0.8520

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The sum of an infinite geometric series exist if

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| r | < 1

| r | > 1

r = 1

r = -1

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The probability to get an odd number in a dice thrown once is

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1/2

1/6

1/3

2

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2x + 2y

4 - x²

-x/y

x/y

The equations of the line thro' the point (2, 3, -5) and equally inclined to the axis are

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sin[cot^-1{cos(tan^-1x)}]=

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In a school there are 150 students Out of these 80 students enrolled for mathematics class.50 enrolled for English class and 60 enrolled for Physics class The student enrolled for English cannot attend any other class but the students of mathematics and Physics can take two courses at a time find the number of students who have taken both physics and mathematics.

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40

30

50

60

If T = {2,4,6,8,10,12}, then

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T = (First six natural numbers)

T = (First six odd numbers)

T = (First six real numbers)

T = ( First six even numbers)

The range of inequality x + 2 > 4 is

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(-1, 2)

(-2, 2)

(1,∞)

None

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i² =

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1

2

-1

0

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The two lines y = 2x and x =2y are

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Parallel

Perpendicular

Equally inclined with axes

Congruent

i¹⁰¹=

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i

i²

-i

-1

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