Question # 1

3, 6, 12,.... is

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A.P

G.P.

H.P.

None of these

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none of these

If w+w2 is a root of (x+1)(x+2)(x+3)(x+4) = k, then

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k=0

k=1

k=w

k=w2

Period of sin 3x is ______

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∀x,y,z ∈ R and z 0,then

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x > y ⇒ xz > yz

x<y ⇒ xz < yz

x < y ⇒ xz > yz

None of these

tanθ/2

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Scalar matrix

Identity matrix

Null matrix

Symmetric matrix

The roots of the equation 2^2x- 10.2^x+ 16 = 0 are

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2, 8

1, 3

1, 8

2, 3

The angle between the vectors 3i + j - k and 2i - j + k is

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Identity matrix

Diagonal matrix

Null matrix

Hermitian matrix

A number A is said to be the A.M between the two numbers a and b if a, A, b are in

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A.M

A.P

G.P

G.M

(x +a)(x +b)(x +c)(x +) = k, k≠0 is reducible to quadratic form only if

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a+b=c+d

a+c=b+d

a+d=b+c

All are correct

The middle term of the expansion (1 + 2x)⁶is ______

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1st term

4th term

2nd term

5th term

1⁰= ______

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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 angles with some initial and terminal sides are called

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Quadrantal angles

Coterminal angles

Allied angles

None

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The point lying on the terminal rat of -270° is

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(1,0)

(0,-1)

(0,1)

(-1,0)

E-radius corresponding to < A is

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∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

In following question, a number series is given with one term missing. choose the correct alternative that will same pattern and fill in the blank spaces.1 , 4, 9, 16, 25, x

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35

36

48

49

The square root of 2i - 20i is

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±(5 - 2i)

±(5+ 2i)

(5 - 2i)

None of these

If x - 1 is a factor of x4 - 5x2 + 4 then other factor is

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(x + 2)2(x - 1)

(x + 2)(x - 1)2

(x+2)(x2- x- 2)

(x + 2)2(x - 1)2

If y is an image of x under the function f, then we write

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y = f(x)

x = f(y)

y = x

none of these

Cofactor of an element aij denoted by Aij is

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(-2)i+j

Mij

(-1)i+j Mij

None of above

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(a + b)c = ac + bc

a + b = b + a

(a + b) + c = a + (b + c)

a(b +c) = ab + ac

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Circumcentre of the triangle, whose vertices are (0, 0), (6, 0) and (0, 4) is

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(2, 0)

(3, 0)

(0, 3)

(3, 2)

For three consecutive terms in A.P middle term is called

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A.M

nth term

Central term

None of these

A relation in which the equality is true only for some values of the unknown is called

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An identity

An equation

A polynomial

None

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