If x,a,b,c are real and (x-a+b)2+(x-b+c)2=0 then a,b,c are in

1.  A.P

2.  G.P

3.  H.P

4.  A.G.P

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4
Correct Answer :

A.P


Explanation :
No Explanation available for this question

If the equation p(q-r)x2+q(r-p)x+r(p-q)=0 has equal roots then 2/q=

1.  (1/r)+(1/p)

2.  (1/p)+-(1/r)

3.  (1/r)-(1/p)

4.  1/pr

View Answer  
4
Correct Answer :

(1/r)+(1/p)


Explanation :
No Explanation available for this question

normals drawn at P,Q intersects o parabola y2=4ax at (x1,y1) then PQ=

1.  (x1+8a)(x1-4a)

2.  (x1+4a)(x1+8a)

3.  (x1+4a)(x1-8a)

4.  (x1-4a)(x1-8a)

View Answer  
4
Correct Answer :

(x1+4a)(x1-8a)


Explanation :
No Explanation available for this question

The number of real roots of (x+1/x)3+(x+1/x)=0,(x≠0) is

1.  2

2.  4

3.  0

4.  6

View Answer  
4
Correct Answer :

0


Explanation :
No Explanation available for this question

Axes are coordinate axes and area of maximum rectangle inscribe in the ellipse is 16 and e= √15/4 then equation of ellipse

1.  (x2/2)+(y2/4) = 1

2.  (x2/32)+(y2/2) = 1

3.  (x2/32)+(y2/16) = 1

4.  (x2/32)+(y2/8) = 1

View Answer  
4
Correct Answer :

(x2/32)+(y2/2) = 1


Explanation :
No Explanation available for this question

If α,β are the roots of the equation x2+x+1=0,then the value of α4+β4 is

1.  -1

2.  0

3.  1

4.  2

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4
Correct Answer :

-1


Explanation :
No Explanation available for this question

when a coin is tossed 5 times the probability getting 3 heads & 2 times is

1.  5/16

2.  5/18

3.  5/32

4.  5/12

View Answer  
4
Correct Answer :

5/16


Explanation :
No Explanation available for this question

If α+β=3 and α3+β3=7,then α and β are the roots of the equation

1.  3x2+9x+7=0

2.  9x2-27x+20=0

3.  2x2-6x+15=0

4.  2x2+6x-15=0

View Answer  
4
Correct Answer :

9x2-27x+20=0


Explanation :
No Explanation available for this question

If 2 squares are selects from a chess board the probability of getting 3 heads and 2 times is

1.  2/9

2.  1/24

3.  1/18

4.  1/12

View Answer  
4
Correct Answer :

1/18


Explanation :
No Explanation available for this question

If α,β are the roots of the equation (x-a)(x-b)+c=0(c≠0),then the roots of the equation (x-c-α)(x-c-β)=c are

1.  a,b+c

2.  a+c,b

3.  a+c,b+c

4.  a-c,b-c

View Answer  
4
Correct Answer :

a+c,b+c


Explanation :
No Explanation available for this question
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