Question # 1

The 7th term of the A.P 7,11,15,is

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24

31

26

23

The equation of the circle with centre (-h, -k) and radius r is

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(x +h)²+ (y+k)²= r²

(x +h)²+ (y-k)²= r²

(x -h)²+ (y+k)²= r²

(x -h)²+ (y-k)²= r²

If f(x) = -x³then f(-2) is

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-2

-4

-8

8

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

The product of complex numbers (a,b) and (c,d) is

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(ac, bd)

(ac-bd, ad+bc)

(ab,cd)

(ac+bd,ad-bc)

The maximum value of Z = 3x+ 4y subjected to the constrains x+ y≤ 40,x+ 2y≤ 60, x≥ 0 and y≥ 0 is

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120

100

140

160

Given two independent event A and B such that P(A) = 0.30 and P(B) = 0.60. Probability of getting neither A nor B is

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0.28

0.13

0.12

0.42

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none of these

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A square is inscribed in the circle x²+ y²- 2x + 4y + 3 =0. Its sides are parallel to the co-ordinate axes. Then one vertex of the square is

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A quadratic equation in x is an equation that can be witten in the form

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ax²+ b = 0

ax³ +b²+c=0

ax² +bx+c=0

ax³ +bx³+cx=0

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-3

-7

1

0

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0

1

2

1/2

If line through (4,3) and (2,k) is perpendicular to y =2x +3, then k =_______

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-1

1

-4

4

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tan 3x + c

cot 3x + c

- cot 3x + c

the curve of the parabola y² = -4ax is symmetric with respect to

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x -axis

y - axis

Botha x and y- axis

None of thes

A fraction in which the degree of the numerator is greater than or equal to the degree of the denominator is called

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A proper fraction

An improper fraction

An equation

An identity

A conditional is regarded as false only when the antecedent is true and consequent is

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True

False

Known

Unknown

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A

B

U

None of these

If G is a G.M between a and b then a,G,b are in

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A.P

H.P

G.P

None of these

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0

1

none of these

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The distance of the point (a,b) from y-axis is

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a

b

a + b

The sum of complex number (a,b) and (c,d) is

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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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The total number of subsets that can be formed out of the set {a, b, c} is

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1

4

8

12

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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