Question # 1

The square roots of negative numbers is called

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Real no

Complex no

Positive no

Negative no

If the circle x²+ y²+ 2gx +2fy + c = 0 passes through the origin then

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c = 0

c = -1

c = -2

c = 1

The 6th term of an arithmetic sequence whose first term is 3 and common difference in zero is

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18

6

3

0

The period of 2 cos x is

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30π

7π

5π

2π

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Range of 2 tan x is ______

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[-2, 2]

-1 < x < 1

R

None of these

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36

360

24

6

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120

5

4

6

tan(2π+θ) = ________;

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tanθ

-tanθ

cotθ

-cotθ

The straight lines represented by the equation ax2+ 2hxy +by2 =0 intersects at

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(1,1)

(0,1)

(1,0)

(0,0)

If the points (a,2b):(c,a+b):(2c-a,h) lie on the same line then

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h=2a

h=a+b

h=ab

h=ac

If 4 - x >5, then

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x > 1

x > -1

x < 1

x < -1

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

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a^xIn a + c

a^x+ c

x a^x+ c

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9/4

4/9

1

None of these

The number of permutations of n objects of which there are n₁like of one kind, n₂like of the second kind and n₃like objects of third kind are

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In the expansion of (a + x)ⁿthe sum of exponents of a and x in each term of the expansion is

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n + 1

n - 1

n

2n

If a₁and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is

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0

a₁r^n-1

a₁rⁿ⁺¹

a₁rⁿ

Range of sin x is ______

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[-1, 1]

R

Negative real numbers

None of these

If n is any positive integer then n²> n + 3 for

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If #n = (n-5)²+ 5, then find #3 x #4.

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54

12

4

9

The area bounded by y = x (x2 - 4) and below x - axis is

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4

0

-4

8

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0

1

2

3

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The point of concurrency of the right bisectors of the sides of a triangle is called

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incentre

circum center

e-center

centroid

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The eccentricity of ellipse becomes zero, then it takes the form of:

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a parabols

a straight line

a circle

None of these

If a, b, c are in A.P., then 3^a, 3^b, 3^care in

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A.P.

G.P.

H.P.

None of these

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A natural number

A rational number

An irrational number

A whole number

The sum of all odd numbers between 100 and 200 is

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6200

7500

6500

3750

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