Question # 1

If A is any matrix then its additive inverse is

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A

A^-1

A^t

-A

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The sides of a right angled triangle are in A.P The ratio of sides is

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1:2:3

3:4:5

2:3:4

5:8:3

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

Any point, where f is neither increasing nor decreasing and f(x) = 0 at that point, is called a

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Minimum

Maximum

Stationary point

Constant point

an -an-1,∀n∈N∧n>1 in an A.P is called

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Common difference

nth term

Common ratio

None of these

The point of concurrency of the medians of a triangle is called

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incentre

circumcentre

e-centre

centroid

Domain of cosec x is ______

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If there is one-one correspondence between A and B, then we write.

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A = B

A⊆ B

A⊇ B

A ∼ B

Which one is not defined∀n∈Z+

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-n!

n!

(-n)!

n!+0!=n!+1

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0

1

-1

none of these

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

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2

5

2,5

7

nCn-r is equal to

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n!

n-1Cr

nCr

None of these

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none of these

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Right angled

Obtuse angled

Isosceles

Equilateral

An equation which holds good for all values of variables is called

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Equation

Conditional equation

Constant

None

A sequence is a function whose domain is

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N

Subset of N

R

None of these

The range of function f(x)=-x2+2x-1 is

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R

(-∞,0]

(-∞,1]

[0,∞)

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

If a,b,c are unit vectors then |a + b|2 +|a - b|2

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4

8ab

9cos

4(a,b)

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0

U

u/2

log u

The 31 term of the A.P 5,2,-1.....is

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-82

82

85

-85

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none of these

The proposition S(k+1) is true when ______ is true∀K∈N

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S(n)

S(k)

S(1)

S(k-1)

If B-A≠φ , then n(B-A) is equal to

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n(a)+n(c)

n(c)-n(a)

n(a)-n(c)

None of these

The graph of y < 2 is the

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Left half plane

upper half plane

Right half plane

Lower half plane

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0

1

-1

2

The root of the quadratic equation are

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3

2

1

4

Matrices A = [aij] 2 x 3 and B =[bij] 3 x 2 are suitable for

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BA

A²

AB

B²

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