Question # 1

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-a -b -c

1

0

-1

Form a group of 5 men and 3 women, a committee of 4 persons is to be selected randomly. The probability that there is a majority of men is

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1/4

1/3

1/2

1/6

The number of subsets of a set having three elements is

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4

6

8

none of these

The set {1,-1,i,-i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

Multiplicative inverse of "1" is

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+- 1

0

1

None of these

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3

1

4

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quadrant I

quadrant II

quadrant III

quadrant IV

If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?

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0

2

4

7

The intercepts of the plane 2x - 3y + 4z = 12 on the co-ordinate axes are given by

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2, -3, 4

6, -4, -3

6, -4, 3

3, -2, 1.5

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At

-A

A

A-1

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Associative law of addition

Commutative law of addition

Additive identity

Closure law of addition

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If 0 = {1,3,5.......}, then n (0) =

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99

odd integers

Even numbers

Infinite

One degree is denoted by

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1⁰

1'

1"

1 rad

The nth term of an A.P., is 12-4n. Its common difference is

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8

4

16

Cos (cos4π/3)=

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π/2

π/3

2π/3

-π/3

If x,y are two -ve distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

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4

3

2

1

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Rational

Irrational

Natural

Odd

tan270° =__________;

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0

1

-1

Undefined

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2

5

7

None of these

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6x - 2 + c

x³- x²+ x + c

6x - x²+ c

6x³- x²+ c

Q∪ Q' =

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Q

Q'

N

R

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If A = [a_ij] is (m x n) matrix, then transpose of A is of the order

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m x m

m x n

n x n

n x m

If origin is the mid point of (a, -3) and (-5, b) then

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a = -5 , b = -3

a = 5 , b =3

a = -5 , b = 3

a = 5 , b = -3

The discriminant of the quadratic equation ax²+ bx + c = 0 is

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b²+ 4ac

b²- 4ac

4ac - b²

a²- 4ac

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