Question # 1

If in a set of real no a is multiplicative identity then

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a,a = a²

a,a = 1

a,a = 0

None of these

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

The obtuse angle between lines = -2 and y = x +2 is

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120°

135°

150°

140°

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

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√3 i

√7

-2-i

√5

For any set X, X∪X is

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X

X'

Φ

Universal Set

The sixth term of the sequence 1,3,12,60....is

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1500

72

2160

2520

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The multiplicative inverse of 4 is

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-4

-1/4

1/4

1

The trigonometric function are continuous whenever

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They are defined

their limit exist

Their period is given

All are incorrect

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0

3

9

-3

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Tan 3x tan 2x-tan x is equal to

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Tan x tan 2x tan 3x

-tan x tan 2x tan 3x

Tan x tan 2x - tan - tan x tan 3x - tan 2x tan 3x

None of these

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

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Matrix

Transpose

Symmetric

Non-symmetric

The slope of x-axis is

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0

undefined

1

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

If f(α) = b2 and g (c) =d where c=b2 then (gof)(a) is

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α

c

b

d

If A⊆ B, and B is a finite set, then

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n (a) < n(B)

n(B)<(A)

n(A)≤ n (B)

n(A)≥ n(B)

If n is any positive integer then 4ⁿ>3ⁿ+ 4 is true for all

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The solution set of x²- 5x + 6 = 0 is

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{1, 3}

{2, 3}

{1, 2}

None of these

Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

The quadratic equation 8 sec²θ- 6 secθ+1 = 0 has

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Infinitely many roots

Exactly two roots

Exactly four roots

No roots

If C is the mid point of AB and P is any point outside AB, then

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Always negative

Zero

Always positive

Infinity

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all are correct

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image

pre-image

constant

none of these

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Range of sinθis

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F(x) = x^xdecreases in the interval

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(0, e)

(0, 1)

(-∞,0)

None

The number of points of intersection of two curves y = 2 sin x and y = 5x²+ 2x + 3 is

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0

1

2

None of these

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