Question # 1

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Reflexive property

Symmetric property

Cancellations property w.r.t. addition

Transitive property

Write the first four terms of the sequence if a_n= (-1)ⁿn²

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-1, 4, -9, 16

1, -4, 9, 16

1, 4, 9, 16

None of these

An open sentence formed by using the sign of equality "=" is called

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Equation

In equation

True sentence

False sentence

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16

None of these

a.a^-1 = a^-1.a = 1 is a

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Commutative law of multiplication

Multiplicative identity

Associative law of multiplication

Multiplicative inverse

The set {Z\ {0} } is group w.r.t

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Addition

Multiplication

Division

Subtraction

The sum of all odd numbers between 100 and 200 is

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6200

7500

6500

3750

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5

-5

none

With usual notations b2 = a2 + c2 -2ac cos is called______;

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None of these

Law of sines

Law of consines

Law of tangents

The set {-1, 1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

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For each natural number n, n (n+1) is

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an even

an odd

multiple of 3

Irrational

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The velocity of a particle moving along a straight line is given by v = 3t + t². The acceleration of the particle after 4 seconds from the start is

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4

11

26

None

A non-terminating non_recurring decimal represents an

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Irrational no

Both a & c

Rational no

None of these

The square matrix A is skew-symmetric when At =

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-B

-C

-A

-D

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∀x∈(a,b),f(x) is increasing if

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f′(x) >0

f′(x) <0

f′′(x) >0

f′′(x) =0

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The 6th term of the sequence 7,9,12,16......is

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27

32

20

19

The physical quantity which possesses both magnitude and direction is called a

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scalar

vector

constant

none of these

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direction ratios

direction cosines

direction angles

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

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x = 1 is in the solution of the inequality

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x + 1 > 0

x - 2 > 0

3x - 1 < 0

x + 2 < 0

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0

1

2

3

The line l is horizontal if

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m is undefined

m=0

m=1

m=0-1

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A conjunction of two statement p and q is true only if

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p is true

q is true

Both p and q are true

both p and q are false

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