Question # 1

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Which of the following is a quadrantal angle

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30°

45°

60°

90°

A sequence of number whose reciprocals form an arithmetic sequence is called

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Geometric sequence

Arithmetic series

Harmonic sequence

Harmonic series

In school there are 150 students Out of these 80 students enrolled for mathematics class 50 enrolled for English class and 60 enrolled for Physics class The student enrolled for English cannot attend any other class but the students of mathematics and Physics can take two courses at a time Find the number of students who have taken both physics and mathematics.

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40

30

50

20

If ax²+ bx + x = 0 is satisfied by every value of x, then

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b = 0, c = 0

c = 0

b = 0

a = b = c = 0

How many 6-Digit number can be formed without repairing any digit from the digits 0,1,2,3,4,5

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720

600

120

6-5!

If A is a skew-symmetric matrix of order n and P, any square matrix of order n.prove that P' AP is

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Skew-symmetric

Symmetric

Null

Diagonal

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A^-

A^t

-A

A

There is no integer n for which 3n is

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Even

Prime

Odd

Real

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A complex number

A rational number

A natural number

An irrational number

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

If n is any positive integer then n²> n + 3 for

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Composition of functions is

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Non-commutative (fg ≠ gf)

non-associative [8(fh) ≠(8f)h]

Commutative (fg = gf)

f of-1≠ 1

If f(x) = ax², and a>0, then the lowest point on the parabola is called.

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Vertex of parabola

Co-ordinates of parabola

Roots of the equation

Coefficient of the equation

If f(x) = x + 1 then f(z²-1) is

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z²

z²+ 2

z²- 2

none of these

The maximum value of the quadratic function f(x) = -2x2+20x,is

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4

3

50

7

5 unbiased coins coins are tossed simultaneously. The probability of getting at least one head is

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1 / 32

31 / 32

1 / 16

None of these

Any horizontal line divided the plane into

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Left half plane

Upper and lower half planes

Infinite number of horizontal liens

None of these

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direction ratios

direction cosines

direction angles

none of these

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Rational

Irrational

Non-real

Zero

If f(x) = x²then f(2) is

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-2

2

4

-4

If a,β are the roots of ax2+bx+c=0,the equation whose roots are doubled is

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ay2 +2by+c=0

ay2+2by+4c=0

ay2+2by+c=0

ay2+by+4c=0

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A vector with magnitude one is called

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constant vector

unit vector

zero vector

null vector

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2, 3

3, 3

2, 6

2, 4

The domain of a finite sequence is a

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Set of natural numbers

R

Subset of N

Proper subset of N

The tangents drawn from the point P to a circle are real and coincident if

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P is on the circle

P is inside the circle

P is outside the circle

none of these

G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are

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2, 2, 2

3, 3, 3

2, 2, 4

2, 3, 4

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2

0

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A,. B, C are coincident

A, B, C are collinear

Both A and B

None of these

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