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.

If range of the numbers x1,x2,x3,x4,x5 is r where xi<xi+1. If each number is multiplied by p(p>0) and then k is subtracted from each number then range of the new numbers is

Answer»

If range of the numbers x1,x2,x3,x4,x5 is r where xi<xi+1. If each number is multiplied by p(p>0) and then k is subtracted from each number then range of the new numbers is

2.

Let A and B be two sets containing four and two elements respectively. Then the number of subsets of the set AB each having at least three elements is:

Answer» Let A and B be two sets containing four and two elements respectively. Then the number of subsets of the set AB each having at least three elements is:
3.

The integrating factor of the differential equation. is A. B. C. D.

Answer» The integrating factor of the differential equation. is A. B. C. D.
4.

If f(x)=x sin x, then f′(π2)=

Answer»

If f(x)=x sin x, then f(π2)=


5.

If the two diagonals of one of the faces of a parallelopiped are 6^i+6^k and 4^j+2^k and one of the edges not containing the given diagonals is 4^j−8^k, then the volume of the parallelopiped is

Answer»

If the two diagonals of one of the faces of a parallelopiped are 6^i+6^k and 4^j+2^k and one of the edges not containing the given diagonals is 4^j8^k, then the volume of the parallelopiped is

6.

If the line ax+y=c, touches both the curves x2+y2=1 and y2=4√2x, then |c| is equal to :

Answer»

If the line ax+y=c, touches both the curves x2+y2=1 and y2=42x, then |c| is equal to :

7.

Consider the parabola X2+4Y=0. Let p = (a, b) be any fixed point inside the parabola and let 'S' be the focus of the parabola. Then the minimum value SQ + PQ as point Q moves on the parabola is

Answer»

Consider the parabola X2+4Y=0. Let p = (a, b) be any fixed point inside the parabola and let 'S' be the focus of the parabola. Then the minimum value SQ + PQ as point Q moves on the parabola is

8.

The point in which the join of A(- 9, 4, 5) and B(11, 0, -1) is met by the perpendicular from the origin

Answer»

The point in which the join of A(- 9, 4, 5) and B(11, 0, -1) is met by the perpendicular from the origin


9.

113.Find the modulus and the arguments . Q. z=-1-i3

Answer» 113.Find the modulus and the arguments . Q. z=-1-i3
10.

SecA=x+1/4x, prove SecA+tanA=2x or 1x/2

Answer» SecA=x+1/4x, prove SecA+tanA=2x or 1x/2
11.

The arithmetic mean of the 5 consecutive integers starting with ′s′ is ′a′. Then the arithmetic mean of 9 consecutive integers that start with s+2

Answer»

The arithmetic mean of the 5 consecutive integers starting with s is a. Then the arithmetic mean of 9 consecutive integers that start with s+2

12.

How many 3-digit numbers are there, with distinct digits, with each digit odd?

Answer»

How many 3-digit numbers are there, with distinct digits, with each digit odd?

13.

Evaluate the given limit :limz→1z13−1z16−1

Answer» Evaluate the given limit :

limz1z131z161
14.

A tiffin contains 4 sandwiches . How many sandwiches would be there in 8 such tiffins?

Answer»

A tiffin contains 4 sandwiches . How many sandwiches would be there in 8 such tiffins?

15.

Complete the given series: 5 ,15,28,44,63,85 ?

Answer» Complete the given series:
5 ,15,28,44,63,85 ?
16.

If suchthat f(2) = 0, then f(x) is(A) (B) (C) (D)

Answer»

If
such
that f(2) = 0, then f(x) is



(A) (B)



(C) (D)

17.

A 6 sided regular polygon (hexagon) is inscribed in a circle of radius 10 cm, find area of the hexagon. [2 MARKS]

Answer»



A 6 sided regular polygon (hexagon) is inscribed in a circle of radius 10 cm, find area of the hexagon. [2 MARKS]



18.

The domain of the function log2log3log4(x) is

Answer»

The domain of the function log2log3log4(x) is

19.

If α and β are two distinct complex numbers satisfying |α|2β−|β2|α=α−β, then (Here, arg(z) denotes the principal argument with −π&lt;arg(z)≤π)

Answer»

If α and β are two distinct complex numbers satisfying |α|2β|β2|α=αβ, then
(Here, arg(z) denotes the principal argument with π<arg(z)π)

20.

If , y=root3(sint)+ cost then maximum value of y occurs, when value of t isOptions:–30°–60°Should have chosen 60°30°explain it briefly.

Answer» If , y=root3(sint)+ cost then maximum value of y occurs, when value of t is

Options:

–30°
–60°
Should have chosen 60°
30°
explain it briefly.
21.

Show that the relation R in the set A = {1, 2, 3, 4, 5} given by , is an equivalence relation. Show that all the elements of {1, 3, 5} are related to each other and all the elements of {2, 4} are related to each other. But no element of {1, 3, 5} is related to any element of {2, 4}.

Answer» Show that the relation R in the set A = {1, 2, 3, 4, 5} given by , is an equivalence relation. Show that all the elements of {1, 3, 5} are related to each other and all the elements of {2, 4} are related to each other. But no element of {1, 3, 5} is related to any element of {2, 4}.
22.

If π&lt;θ&lt;3π2, then write the value of √1−cos 2θ1+cos 2θ

Answer»

If π<θ<3π2, then write the value of

1cos 2θ1+cos 2θ

23.

How many non zero value of x and y for which the unit vectors 9^(x) i + α j + β k and 45^(y) i + γ j + δ k makes equal angle with x axis

Answer» How many non zero value of x and y for which the unit vectors 9^(x) i + α j + β k and 45^(y) i + γ j + δ k makes equal angle with x axis
24.

If A and B are two sets such that (A−B)∪B=A, then

Answer»

If A and B are two sets such that (AB)B=A, then

25.

33. Let positive real numbers x and y be such that 3x+4y=14. What's the maximum value of xy?

Answer» 33. Let positive real numbers x and y be such that 3x+4y=14. What's the maximum value of xy?
26.

Let a,b,c be the sides of a triangle opposite to angles A,B,C respectively. If at least one root of the quadratic equation ax2+bx+c=0 with integral coefficients is same as one of the roots of the quadratic equation x2+kx+2=0 where k∈N,k&gt;12 , then tan(C+A2)cot(C−A2) is equal to

Answer»

Let a,b,c be the sides of a triangle opposite to angles A,B,C respectively. If at least one root of the quadratic equation ax2+bx+c=0 with integral coefficients is same as one of the roots of the quadratic equation x2+kx+2=0 where kN,k>12 , then tan(C+A2)cot(CA2) is equal to

27.

37.The distance of the point (3,8,2) from the line (x-1)/2+(y-3)/4+(z-2)/3 measured parallel to the plane 3x+2y-2z +17=0.

Answer» 37.The distance of the point (3,8,2) from the line (x-1)/2+(y-3)/4+(z-2)/3 measured parallel to the plane 3x+2y-2z +17=0.
28.

In a △ABC, E is the midpoint of side BC and D is a point on side AC. If length of side AC is 1 unit and ∠BAC=60∘, ∠ACB=20∘, ∠DEC=80∘, then the value of Area(△ABC)+2Area(△CDE) is

Answer»

In a ABC, E is the midpoint of side BC and D is a point on side AC. If length of side AC is 1 unit and BAC=60, ACB=20, DEC=80, then the value of Area(ABC)+2Area(CDE) is

29.

25. Root of Domain Sin2x

Answer» 25. Root of Domain Sin2x
30.

If roots of equation of x2+x+1=0 are a, b and roots of x2+px+q=0 are ab,ba then value of p+q is

Answer»

If roots of equation of x2+x+1=0 are a, b and roots of x2+px+q=0 are ab,ba then value of p+q is

31.

Find for , x in quadrant II

Answer» Find for , x in quadrant II
32.

Let f(x) be a real-valued function such that ∣∣f(x)+x2+1∣∣≥|f(x)|+∣∣x2+1∣∣ and f(x)≤0 for all real values of x. Then the absolute value of 5∑r=1(1+f(r)) is

Answer» Let f(x) be a real-valued function such that f(x)+x2+1|f(x)|+x2+1 and f(x)0 for all real values of x. Then the absolute value of 5r=1(1+f(r)) is
33.

Column 11.Logax,a&gt;12.Logax,0&lt;a&lt;13.ax,a&gt;14.ax,0&lt;a&lt;1 Column 2Graph of P :Graph of Q : Graph of R : Graph of S :

Answer»

Column 1


1.Logax,a>1


2.Logax,0<a<1


3.ax,a>1


4.ax,0<a<1


Column 2

Graph of P :




Graph of Q :




Graph of R :



Graph of S :



34.

Match List I with the List II and select the correct answer using the code given below the lists : List IList II(A)If m and n are positive integers satisfying(P)91+cos2θ+cos4θ+cos6θ+cos8θ+cos10θ=cosmθ⋅sinnθsinθ ,then (m+n) is equal to(B)The minimum value of the expression 9x2sin2x+4xsinx for x∈(0,π) is (Q)10(C)Let f(x)=11−8sinx−2cos2x. If the maximum and minimum values of f(x)(R)11are denoted by M and m respectively, then M+8m has the value equal to (D)If tan9θ=34(where 0&lt;θ&lt;π18), then the value of (3 cosec 3θ−4sec3θ)(S)12 is equal to(T)13Which of the following is a CORRECT combination ?

Answer»

Match List I with the List II and select the correct answer using the code given below the lists :



List IList II(A)If m and n are positive integers satisfying(P)91+cos2θ+cos4θ+cos6θ+cos8θ+cos10θ=cosmθsinnθsinθ ,then (m+n) is equal to(B)The minimum value of the expression 9x2sin2x+4xsinx for x(0,π) is (Q)10(C)Let f(x)=118sinx2cos2x. If the maximum and minimum values of f(x)(R)11are denoted by M and m respectively, then M+8m has the value equal to (D)If tan9θ=34(where 0<θ<π18), then the value of (3 cosec 3θ4sec3θ)(S)12 is equal to(T)13



Which of the following is a CORRECT combination ?

35.

Prove that √3-√2 is irrational

Answer» Prove that √3-√2 is irrational
36.

In a mathematics class, 20 children forgot their rulers and 17 forgot their pencils. Teacher said "Go and borrow them from someone at once”. 24 children left the room, then how many children forgot both:

Answer»

In a mathematics class, 20 children forgot their rulers and 17 forgot their pencils. Teacher said "Go and borrow them from someone at once”. 24 children left the room, then how many children forgot both:



37.

In which city is the number of couples having more than four children and less than seven children is the least?

Answer»

In which city is the number of couples having more than four children and less than seven children is the least?


38.

If ∣∣∣∣λ2+3λλ−1λ+3λ+12−λλ−4λ−3λ+43λ∣∣∣∣=pλ4+qλ3+rλ2+sλ+t, then t equals to

Answer»

If
λ2+3λλ1λ+3λ+12λλ4λ3λ+43λ
=pλ4+qλ3+rλ2+sλ+t,
then t equals to

39.

ntSuppose f(x) is a polynomial of degree 5 and with leading co-efficient 2009 . Suppose further that f(1)=1 , f(2)=3 , f(3)=5 , f(4)=7 , f(5)=9 . What is the value of f(6)?n

Answer» ntSuppose f(x) is a polynomial of degree 5 and with leading co-efficient 2009 . Suppose further that f(1)=1 , f(2)=3 , f(3)=5 , f(4)=7 , f(5)=9 . What is the value of f(6)?n
40.

If the mth term of a H.P. be n and nth be m, then the rth term will be

Answer»

If the mth term of a H.P. be n and nth be m, then the rth term will be



41.

A circle with centre at (15,−3) is tangent to y=x23 at a point in the first quadrant. The radius of the circle is equal to a√5 where a is

Answer» A circle with centre at (15,3) is tangent to y=x23 at a point in the first quadrant. The radius of the circle is equal to a5 where a is
42.

Integral of sin*3 theta dtheta

Answer» Integral of sin*3 theta dtheta
43.

In any triangle, the minimum value of r1r2r3r3 is equal to k, then the number of positive integral solutions of the equation x1+x2+x3=k is :

Answer»

In any triangle, the minimum value of r1r2r3r3 is equal to k, then the number of positive integral solutions of the equation x1+x2+x3=k is :

44.

Find the equation of the line which passes though and is inclined with the x-axis at an angle of 75°.

Answer»

Find the equation of the line which passes though and is inclined with the x-axis at an angle of 75°.

45.

Calculate the mean deviation about median age for the age distribution of 100persons given below:12.Age 16-20 21-25 26-30 31-35 36-40 41-45 46-50 51-55(in years)Number512142612 16 9

Answer» Calculate the mean deviation about median age for the age distribution of 100persons given below:12.Age 16-20 21-25 26-30 31-35 36-40 41-45 46-50 51-55(in years)Number512142612 16 9
46.

limx→0(cosec x−cot x)

Answer»

limx0(cosec xcot x)

47.

∫2x−3x2+3x−18dx=(where c is integration constant)

Answer» 2x3x2+3x18dx=

(where c is integration constant)
48.

What is 1/5th root of 8

Answer» What is 1/5th root of 8
49.

2.Find differential equation corresponding to the equation y=a sin(mx +b) where a,m,b all are arbitrary constants

Answer» 2.Find differential equation corresponding to the equation y=a sin(mx +b) where a,m,b all are arbitrary constants
50.

the vertices of a hyperbola are at (0,0) and (10,0) and one of its foci is at (18,0) the equation of hyperbola is

Answer» the vertices of a hyperbola are at (0,0) and (10,0) and one of its foci is at (18,0) the equation of hyperbola is