Question # 1

Sin 50°-sin 70°+sin 10° is equal to

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1

0

1/2

2

(0.90)^1/2is equal to

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0.99

0.90

0.80

0.88

For a square matrix A, if A = At, then A is called

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Matrix

Transpose

Symmetric

Non-symmetric

A triangle which is not right is called an ______ triangle

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Acute

Obtuse

Oblique

None of these

The set {1, -1, 1, -1}, form a group under

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Addition

Multiplication

Subtraction

None

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Closure law of addition

Associative law of addition

Additive inverse

Additive identity

The positive value of k for which the equation x2 + kx + 64 = 0 has one of the roots 0

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4

64

8

All values of k

The exterior angle of the interior angle C of he quadrilateral whose vertices are A(5,2),B(-2,3),C(-3,-4),D(4,-5) is

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30°

60°

45°

90°

The distance of the point (2, -3) from x-axis is

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-2

-3

2

3

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0

1

In a triangle if a > 45°,β > 30° then y cannot be

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90°

100°

10°

120°

If Z = (1,2), then Z^-1 =?

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(0.2, 0.4)

(-0.2 ,0.4)

(0.2,-0.4)

(-0.2,-0.4)

Rank of matrix [1 3 5 0] is

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1

3

2

4

Tan^-11/x = ______

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sin x

sec^-1X

cot^-1X

None of these

i²=

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1

2

-1

0

A line joining two distinct points on a parabola is called a ______ of the parabola.

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Chord

Tangent

Lust rectum

directrix

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a^x

a^xIn a

The√ is used for the

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Positive square root

Negative square root

+ve and -ve square root

Whole number

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If a polynomial p(x) is divided by x-c, then the remainder is

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p(x)

x-c

c

P(c)

The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

If a2 = b2 then

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a = b

a+b= 1

|a+b| =0

None

A combination lock on a suitcase has 3 wheels each labeled with nine digits from 1 to 9. If an opening combination is a particular sequence of three digits with no repeats, the probability of a person guessing the right combination is

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1 / 500

1 / 504

1 / 252

1 / 250

Three numbers are chosen random without replacement from {1, 2, 3, ...., 10}. the probability that minimum of the chosen numbering is 3 or their maximum is 7