Question # 1

If A is such that a,A,B are in A.P then A is called

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A.M

Common ratio

Common difference

None of these

The distance of a moving particle at any instant t is x = 3t2 +1 then velocity of particle at t = 10 is

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50 cm/sec

60 cm/sec

61 cm/sec

None of these

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tan 3x + c

cot 3x + c

- cot 3x + c

Period of cosec x is ______

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1

-1

p(x) = 2x⁴- 3x³+ 2x - 1 is polynomial of degree

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1

2

3

4

If x - 2 is a factor of ax2- 12x + a = 2a, then a = ______

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-5

5

0

1

If you are looking a bird in the tree from the ground then the angle formed is called angle of______;

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Elevation

Depression

Right angle

None of these

Corner point of the system x - y≤ 2,x + y≤ 4,2x -y≤ 6,x≥ 0,y≥ 0

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(1,4)

(4,2)

(3,1)

(4,1)

The angle of elevation of the tops of two towers at the middle point of the line joining the foots of the tower are 60^οand 30^οrespectively. The the ratio of the heghts of the tower is

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2 : 1

3 : 1

1 : 2

1 : 3

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A square matrix A = [aij] is upper triangular when

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cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

The matrix A = [aij]1xn is a

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Vector

Rectangular matrix

Column vector

Square matrix

If ax + bx + c =0 is satisfied by every value of x,then

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b = 0,c = 0

c = 0

b = 0

a = b = c = 0

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image

pre-image

constant

none of these

A die is rolled. What is the probability that the dots on the top are greater than 4?

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1/4

1/2

1/3

1/33

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A square matrix A for which A^t= A is called a

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Column matrix

Symmetric matrix

Skew-symmetric matrix

Row matrix

The period of|sin⁡2x| is

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π/2

-π/2

π

π/3

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1

5

7

9

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The domain of the function y = sin x , is

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-π/2≤ x≤ π/2

π/ ≤ x≤ π

-2π ≤ x≤ 2π

-1 ≤ x≤ 1

The set Q

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Forms a group under addition

Does not form a group

Contains no additive indentity

Contains no additive inverse

Fifteen girls compete in a race. The first three places can be taken by them in

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3! ways

12! ways

15 x 14 x 13 ways

42 ways

Z is the set of integers, (z, *) is a group with a * b = a + b + 1, a, b∈G. then inverse of a is

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-a

a + 1

-2 -a

None of these

The minimum value of the quadratic function f(x) = 5 x 2-11,is

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7

-7

6

-11

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(2x+a+b+c)

(a+b+c)

(a+b+c+x)

0

Cos-1(x)=

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cos x

x

tan-1(-x)

Sec-1 (1/x)

120°=______

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