Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Integrate the following functions. ∫ sin (ax+b)cos (ax+b)dx.

Answer»

Integrate the following functions.
sin (ax+b)cos (ax+b)dx.

2.

Domian of the function f(x)=log2(log4(log2(log3(x2+4x−23)))) is

Answer»

Domian of the function f(x)=log2(log4(log2(log3(x2+4x23)))) is


3.

If fifth term of a G.P. is 2, then the product of its first 9 terms is

Answer»

If fifth term of a G.P. is 2, then the product of its first 9 terms is

4.

Shriya and Vidya solved a quadratic equation. In solving it, Shriya made a mistake in the constant term and obtained the roots as 5, – 3 while Vidya made a mistake in the coefficient of x and obtained the roots as 1, –3. What are the correct roots of the equation?

Answer» Shriya and Vidya solved a quadratic equation. In solving it, Shriya made a mistake in the constant term and obtained the roots as 5, – 3 while Vidya made a mistake in the coefficient of x and obtained the roots as 1, –3. What are the correct roots of the equation?
5.

Detailed difference between sequence, series and Progression.

Answer» Detailed difference between sequence, series and Progression.
6.

Expand the expression

Answer» Expand the expression
7.

Let A, B, C are three sets such that n(A∩B)=n(B∩C)=n(C∩A)=n(A∩B∩C)=2, then n((A×B)∩(B×C)) is equal to

Answer» Let A, B, C are three sets such that n(AB)=n(BC)=n(CA)=n(ABC)=2, then n((A×B)(B×C)) is equal to
8.

If the function f(x)={k1(x−π)2−1,x≤πk2cosx,x>π is twice differentiable, then the ordered pair (k1,k2) is equal to:

Answer»

If the function f(x)={k1(xπ)21,xπk2cosx,x>π is twice differentiable, then the ordered pair (k1,k2) is equal to:

9.

The distance of the point (1, 0, 2) from the point of intersection of the line x−23=y+14=z−212 and the plane x - y + z = 16 is

Answer»

The distance of the point (1, 0, 2) from the point of intersection of the line
x23=y+14=z212 and the plane x - y + z = 16 is


10.

Find the roots of the following equation, if they exist, by applying the quadratic formula: x2+5x−(a2+a−6)=0

Answer» Find the roots of the following equation, if they exist, by applying the quadratic formula:

x2+5x(a2+a6)=0
11.

The value of sin−1(sin5π6) is

Answer»

The value of sin1(sin5π6) is

12.

Solve the following equations for x:(i) tan-114+2 tan-115+tan-116+tan-11x=π4(ii) 3 sin-12x1+x2-4 cos-11-x21+x2+2 tan-12x1-x2=π3(iii) tan-12x1-x2+cot-11-x22x=2π3, x>0(iv) (v)(vi) tan-1 x-2x-1+tan-1 x+2x+1=π4

Answer» Solve the following equations for x:



(i)
tan-114+2 tan-115+tan-116+tan-11x=π4



(ii) 3 sin-12x1+x2-4 cos-11-x21+x2+2 tan-12x1-x2=π3



(iii) tan-12x1-x2+cot-11-x22x=2π3, x>0



(iv)

(v)

(vi) tan-1 x-2x-1+tan-1 x+2x+1=π4
13.

The total number of four-digit numbers xyzt such that x<y=z>t is

Answer»

The total number of four-digit numbers xyzt such that x<y=z>t is


14.

20. Equation of the circle which is such that the lengths of the tangents to it from the points (1,0),(0,2)and (3,2) are 1,7 and 2 respectively is

Answer» 20. Equation of the circle which is such that the lengths of the tangents to it from the points (1,0),(0,2)and (3,2) are 1,7 and 2 respectively is
15.

Determine whether or not each of the definition of ∗ given below gives a binary operation. In the event that ∗ is not a binary operation, give justification for this. (v) On Z+, defined ∗ by a∗b=a

Answer»

Determine whether or not each of the definition of given below gives a binary operation. In the event that is not a binary operation, give justification for this.
(v) On Z+, defined by ab=a

16.

Differentiate thefunction with respect to x.

Answer»

Differentiate the
function with respect to x.


17.

Let α and β be the roots of equation px2+qx+r=0,p≠0. If p,q,r are in A.P. and 1α+1β=4, then the value of |α−β| is

Answer»

Let α and β be the roots of equation px2+qx+r=0,p0. If p,q,r are in A.P. and 1α+1β=4, then the value of |αβ| is

18.

In the accompanying diagram a fair spinner is placed at the centre O of the circle Diameter AOB and radius OC divide the circle into three regions labelled X, Y and Z. It ∠BOC = 45°. What is the probability that the spinner will land in the region X? (in the given figure).

Answer» In the accompanying diagram a fair spinner is placed at the centre O of the circle Diameter AOB and radius OC divide the circle into three regions labelled X, Y and Z. It ∠BOC = 45°. What is the probability that the spinner will land in the region X? (in the given figure).


19.

In SHM, which equation represent general equation, equation from mean position, equation from extreme position respectively.(P)y=Asin(wt+α)(Q)y=Asin(wt) (R)y=Acos(wt) A.R,Q,PB.P,R,QC.P,Q,RD.Q,R,P

Answer»

In SHM, which equation represent general equation, equation from mean position, equation from extreme position respectively.

(P)y=Asin(wt+α)

(Q)y=Asin(wt)

(R)y=Acos(wt)

A.R,Q,P

B.P,R,Q

C.P,Q,R

D.Q,R,P


20.

If α is the greater root of x2−5x+4=0 and α+m=2, then the value of m is

Answer»

If α is the greater root of x25x+4=0 and α+m=2, then the value of m is

21.

The equation of the circle which is touched by y=x, has its centre on the positive direction of the x-axis and cuts off a chord of length 2 units along the line √3y−x=0, is

Answer»

The equation of the circle which is touched by y=x, has its centre on the positive direction of the x-axis and cuts off a chord of length 2 units along the line 3yx=0, is

22.

Prove the following identities (1-16)sin3 x+cos3 xsin x+cos x+sin3 x-cos3 xsin x-cos x=2

Answer» Prove the following identities (1-16)

sin3 x+cos3 xsin x+cos x+sin3 x-cos3 xsin x-cos x=2
23.

Find X if 2X+3Y=[2340]and 3X+2Y=[7−2−15]

Answer»

Find X if 2X+3Y=[2340]and 3X+2Y=[7215]


24.

If for the complex number z satisfying |z−2−2i|≤1, the maximum value of |3iz+6| is attained at a+ib, then a+b is equal to

Answer» If for the complex number z satisfying |z22i|1, the maximum value of |3iz+6| is attained at a+ib, then a+b is equal to
25.

The value of 'a + b' such that the surfaceax2−byz=(a+2)x is orthogonal to the surface 4x2y+z3=4 at the point (1, -1, 2) is ________ .3.5

Answer» The value of 'a + b' such that the surface

ax2byz=(a+2)x is orthogonal to the surface 4x2y+z3=4 at the point (1, -1, 2) is ________ .
  1. 3.5
26.

If ∫1sinxt2.f(t)dt=1−sinx,∀xϵ(0,π2) then the value of f(1√3) is

Answer»

If 1sinxt2.f(t)dt=1sinx,xϵ(0,π2) then the value of f(13) is

27.

If the roots of 4x2−(5k+1)x+5k=0 differ by unity then the sum of all the possible values of k is

Answer»

If the roots of 4x2(5k+1)x+5k=0 differ by unity then the sum of all the possible values of k is

28.

lf the projections of the line segment AB on the YZ-plane, ZX-plane, XY-plane are √160,√153,5 respectively, then the projection of AB on the z-axis is

Answer»

lf the projections of the line segment AB on the YZ-plane, ZX-plane, XY-plane are 160,153,5 respectively, then the projection of AB on the z-axis is

29.

The sum of all the real solution(s) of tan−1x−cot−1x=cos−1(2−x) is

Answer» The sum of all the real solution(s) of tan1xcot1x=cos1(2x) is
30.

Let |z|=2 and locus of 3z+1 be a circle having radius a and z21+z22−2cosθz1z2=0. If |z1|:|z2|=a:b then b is equal to

Answer» Let |z|=2 and locus of 3z+1 be a circle having radius a and z21+z222cosθz1z2=0. If |z1|:|z2|=a:b then b is equal to
31.

If A and B are square matrices of the same order such that AB = BA , then prove by induction that . Further, prove that for all n ∈ N

Answer» If A and B are square matrices of the same order such that AB = BA , then prove by induction that . Further, prove that for all n ∈ N
32.

49. Let z be the set of all integers and A={(a,b): a + 3b= 28,a,b belong to z} B={(a,b): a>b,a,b belong to Z } Then n(AintersectionB) is equal to

Answer» 49. Let z be the set of all integers and A={(a,b): a + 3b= 28,a,b belong to z} B={(a,b): a>b,a,b belong to Z } Then n(AintersectionB) is equal to
33.

Number of non negative integral solutions of A+B+C+D=12 where A,B&gt;0 and 0&lt;D&lt;5 is

Answer» Number of non negative integral solutions of A+B+C+D=12
where A,B>0 and 0<D<5 is
34.

4tan x (1- tan21-6 tan2x tan4x23.tan 4x =x)

Answer» 4tan x (1- tan21-6 tan2x tan4x23.tan 4x =x)
35.

Intriangle ABC which of the following is not true:A. B. C. D.

Answer»

In
triangle ABC which of the following is not true:





A.



B.



C.



D.

36.

If 4 sin2 x=1, then the values of x are(a) 2 nπ±π3, n ∈ Z​(b) nπ±π3, n ∈ Z​(c) nπ±π6, n ∈ Z(d) 2 nπ±π6, n ∈Z​

Answer» If 4 sin2 x=1, then the values of x are

(a) 2 nπ±π3, n Z



(b) nπ±π3, n Z



(c) nπ±π6, n Z



(d) 2 nπ±π6, n Z
37.

If sinA=1213,cosB=−35,0&lt;A&lt;π2, π&lt;B&lt;3π2, then the value of sin(A+B) is

Answer»

If sinA=1213,cosB=35,0<A<π2, π<B<3π2, then the value of sin(A+B) is

38.

The number of roots of ex+0.5x2−2=0 in the range [−5,5] is

Answer»

The number of roots of ex+0.5x22=0 in the range [5,5] is

39.

Suppose x and y are natural numbers, then the number of ordered pairs (x,y) which satisfy x+y≤5 is

Answer»

Suppose x and y are natural numbers, then the number of ordered pairs (x,y) which satisfy x+y5 is

40.

If A=[abb2−a2−ab] and An=O, then the minimum value of ′n′ is

Answer» If A=[abb2a2ab] and An=O, then the minimum value of n is
41.

Let A be a vector parallel to line of intersection of planes P1:x=0 and P2:x−y−z=0 through origin. The acute angle between A and 2^i+^j−2^k is

Answer»

Let A be a vector parallel to line of intersection of planes P1:x=0 and P2:xyz=0 through origin. The acute angle between A and 2^i+^j2^k is

42.

54 what are rational and irrational functions ?

Answer» 54 what are rational and irrational functions ?
43.

If sinx=35,cosy=−1213, where x and y both lie in second quadrant, find the value of sin(x+y).

Answer» If sinx=35,cosy=1213, where x and y both lie in second quadrant, find the value of sin(x+y).
44.

AB, BC, CD, DE and EF are 5 vectors as shown in the figure.Joining which 2 points will give the magnitude of resultant of ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯BC+¯¯¯¯¯¯¯¯¯CD+¯¯¯¯¯¯¯¯¯DE+¯¯¯¯¯¯¯¯EF

Answer» AB, BC, CD, DE and EF are 5 vectors as shown in the figure.



Joining which 2 points will give the magnitude of resultant of ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯BC+¯¯¯¯¯¯¯¯¯CD+¯¯¯¯¯¯¯¯¯DE+¯¯¯¯¯¯¯¯EF


45.

Let A and B be any two events such that P(A)=12 and P(B)=13. Then the value of P(A′∩B′)′+P(A′∪B′)′ is

Answer»

Let A and B be any two events such that P(A)=12 and P(B)=13. Then the value of P(AB)+P(AB) is


46.

Using the method of integration,find the area of the triangle ABC,coordinates of whose vertices are A(4,1),B(6,6) and C(8,4).

Answer»

Using the method of integration,find the area of the triangle ABC,coordinates of whose vertices are A(4,1),B(6,6) and C(8,4).

47.

What is crusa cerebri and it connects what to what?

Answer» What is crusa cerebri and it connects what to what?
48.

Prove that the coefficient of x n in the expansion of (1 + x ) 2 n is twice the coefficient of x n in the expansion of (1 + x ) 2 n –1 .

Answer» Prove that the coefficient of x n in the expansion of (1 + x ) 2 n is twice the coefficient of x n in the expansion of (1 + x ) 2 n –1 .
49.

Find the angle between the lines whose direction cosines are given by the equations(i) l + m + n = 0 and l2 + m2 − n2 = 0(ii) 2l − m + 2n = 0 and mn + nl + lm = 0(iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0(iv) 2l + 2m − n = 0, mn + ln + lm = 0

Answer» Find the angle between the lines whose direction cosines are given by the equations

(i) l + m + n = 0 and l2 + m2 − n2 = 0

(ii) 2l − m + 2n = 0 and mn + nl + lm = 0

(iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0

(iv) 2l + 2m − n = 0, mn + ln + lm = 0
50.

If a matrix has 24 elements, what are the possible order it can have? What, if it has 13 elements?

Answer» If a matrix has 24 elements, what are the possible order it can have? What, if it has 13 elements?