Question # 1

A point of a solution region where two of its boundary lines intersect, is called

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Boundary

Inequality

Half plane

Vertex

The set {1,-1,i,-i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

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The sum of the roots of the equation x2 -6x +2 = 0 is

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-6

2

-2

6

The first three terms in the expansion of (1 + x)^-2are ______

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1 - 2x + 3x²

1 - 2x - 3x²

1 + 2x + 3x²

-2 -2x + 3x²

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 D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

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a cot(ax + b) + c

- a cot(ax + b) + c

For which of the following ordered pairs (s, t) is s + t > 2 and s - t < -3?

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(3, 2)

(2, 3)

(1, 8)

(0, 3)

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

The value of x, and y, when (x + iy)²= 5 + 4i

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X = 2, y = -1

X = -2, y=1

X = 2, y = -1

X = 2, y = 2

The solution of the quadratic equation x2 -7x + 10=0, is

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2

5

2,5

7

If x³+ ax²- a²x - a³is divided by x + a, then the remainder is

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0

a³

2a³

-2a³

If cosα= 4/5, then cosα/2

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(a, b) + (-a, -b) =

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(0,0)

(a, b)

(-a, -b)

(1, 1)

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x = _________ is in the solution of 2x + 3 < 0

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0

2

-1

-2

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Cos (cos4π/3)=

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π/2

π/3

2π/3

-π/3

{1, 2, 3} is _____

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an infinite set

A finite set

A singleton set

Universal set

Which of the following statement is true?

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A set is a collection of non-empty object

A set is a collection of only numbers

a set is any collection of things

a set is well-defined collection of objects

If Z₁= 1 + i, Z₂= 2+3i, then |Z₁- Z₂| = ?

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In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is

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69°

66°

60°

63°

for n€ N, 3^{2n + 7 is divisible by}

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7

8

9

10

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If f(x) = x²then f(-2) is

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-2

2

4

-4

Two positive integers whose sum is 30 and their product will be maximum are

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12,18

10,20

15,15

14,16

Every recurring decimal represents

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A natural number

A rational number

An irrational number

A whole number

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-8

8

8i

32

sin (sin^-1(1/2))=

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0

2

∞

1/2

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