Question # 1

Cosec 60° = ______

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How many terms of the A.P 3,6,9,12,15...........must be taken to make the sum 108

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8

6

7

36

3, 6, 12,.... is

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A.P

G.P.

H.P.

None of these

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

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1/2

1/6

1/3

2

x²+ x - 6 = 0 is

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An equation

An identity

A polynomial

None of these

How many signals can be given by 5 flags of different colours, using 3 flags at a time

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120

60

24

15

If a 1-1 correspondence can be established b/w two sets A and B, then they are called

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Equal sets

Equivalent sets

Over lapping sets

None of these

Which of the following is a vector.

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work

time

density

electric field

If S = {3,6,9,12.......}, then

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S = Four multiples of 3

S = Set of even numbers

S = Set of prime numbers

S = All multiples of 3

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G = {e, a, b, c} is an Abelian group with e as identity element The order of the other elements are

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2,2,2

3,3,3

2,2,4

2,3,4

What is the circular measure of the angles between the hands of which at 4 o clock

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π/6

3π/2

π/4

2π/3

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60° = ______

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In one hour the minute hand of a clock turns through

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If the equation x2+2x-3=0 and x2+3x-k=0 have a common root then the non - zero value of k is

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1

3

2

4

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15

15 i

-15 i

-15

If sinαand cosαare the roots of the equation px²+ qx + r =0, then

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p²- q²+ 2pr = 0

(p + r)²= q²- r²

p²+ q²- 2pr = 0

(p - r)²= q²+ r²

The set of real numbers is a subset of

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The set of natural numbers

The set of rational numbers

The set of integers

The set of complex numbers

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The velocity and acceleration at any point t of a particle which moves along straight line x = 5r-3

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5,3

5,-3

5,0

10,0

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A matrix with a single column is called

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Column matrix

Row matrix

Identity matrix

Null matrix

Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

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A rational number

An irrational number

An odd number

A prime number

How many 3 digit numbers can be formed by using each one of the digit 2, 3, 5, 7, 9 only once?

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15

24

60

120

sin (α -β)=

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sinαcosβ- cosαsinβ

sinαcosβ+ cosαsinβ

sinαcosα- cosβsinβ

If z1 = 2 + 6i and z2 = 3 + 7i then which expression defines the product of z1 and z2

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36 +(-32)i

-36+32i

6+(-11)i

0, +(-12)i

The order of the matrix [1 2 3] is

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1 x 1

3 x 3

3 x 1

1 x 3

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