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.

limx→∞5x3−6x√9+4x6

Answer»

limx5x36x9+4x6

2.

The number of common solution(s) of the trigonometric equations cos2x+(1−√3)=(2−√3)cosx and sin3x=2sinx, satisfying the inequality √3tanx−1≥0 in [0,5π] is

Answer» The number of common solution(s) of the trigonometric equations cos2x+(13)=(23)cosx and sin3x=2sinx, satisfying the inequality 3tanx10 in [0,5π] is
3.

The number of terms in the expansion of (9x2+12x+4)30 is

Answer» The number of terms in the expansion of (9x2+12x+4)30 is
4.

Tangents PA and PB are drawn to x2+y2=4 from the point P(3,0). Then the area (in sq. units) of △PAB is

Answer»

Tangents PA and PB are drawn to x2+y2=4 from the point P(3,0). Then the area (in sq. units) of PAB is

5.

The value of limn→∞(n!(mn)n)1/n, where m∈N is equal to

Answer»

The value of limn(n!(mn)n)1/n, where mN is equal to

6.

If P(n) : 2×42n+1+33n+1 is divisible by λ for all nϵN is true, then find the value of λ.

Answer»

If P(n) : 2×42n+1+33n+1 is divisible by λ for all nϵN is true, then find the value of λ.

7.

If n A.M.s are inserted between two numbers, prove that the sum of the means equidistant from the beginning and the end is constant.

Answer»

If n A.M.s are inserted between two numbers, prove that the sum of the means equidistant from the beginning and the end is constant.

8.

In the given figure, BC is a circular arc. If AB.BX=AX2 and the length of the line segment BC is equal to AX, then the value of ∠BAC is

Answer»

In the given figure, BC is a circular arc. If AB.BX=AX2 and the length of the line segment BC is equal to AX, then the value of BAC is

9.

If ∣∣∣3xx1∣∣∣=∣∣∣3241∣∣∣ then x is equal to

Answer»

If 3xx1=3241 then x is equal to

10.

Prove that arctan(x) + arctan(y) = n + arctan (x+y1−xy) if x > 0, y > 0 and xy > 1. And arctan(x) + arctan(y) = arctan (x+y1−xy)−n, if x < 0, y < 0 and xy > 1.

Answer» Prove that arctan(x) + arctan(y) = n + arctan (x+y1xy) if x > 0, y > 0 and xy > 1. And arctan(x) + arctan(y) = arctan
(x+y1xy)n, if x < 0, y < 0 and xy > 1.
11.

The distance, from the origin, of the normal to the curve,x=2cost+2tsint,y=2sint–2tcost, at t=π4,is:

Answer»

The distance, from the origin, of the normal to the curve,x=2cost+2tsint,y=2sint2tcost, at t=π4,is:

12.

Find the intervals in which the function f given by f(x)=x3+1x3,x≠0 is increasing Find the intervals in which the function f given by f(x)=x3+1x3,x≠0 is decreasing

Answer»

Find the intervals in which the function f given by f(x)=x3+1x3,x0 is
increasing

Find the intervals in which the function f given by f(x)=x3+1x3,x0 is
decreasing

13.

Let P and Q be two distinct points on the parabola y2=4x, with parameters t and t1 respectively. If the normals at P passes through Q, then the minimum value of t21 is

Answer» Let P and Q be two distinct points on the parabola y2=4x, with parameters t and t1 respectively. If the normals at P passes through Q, then the minimum value of t21 is
14.

A and B are two events such that P(A)≠0. FindP(BA)if A∩B=ϕ

Answer»

A and B are two events such that P(A)0. FindP(BA)if
AB=ϕ

15.

Find the condition that curves 2x=y2 and 2xy = k inersect orthogonally.

Answer»

Find the condition that curves 2x=y2 and 2xy = k inersect orthogonally.

16.

The order of the differential equation of the curve y=ax^2+bx+c where a, b and 'c' are arbitrary constants is

Answer»

The order of the differential equation of the curve y=ax^2+bx+c where a, b and 'c' are arbitrary constants is

17.

The angle (in degrees) subtended at the centre of a circle of diameter 50 cm by an arc of length 11 cm is

Answer»

The angle (in degrees) subtended at the centre of a circle of diameter 50 cm by an arc of length 11 cm is

18.

Let PQR be an acute-angled triangle in which PQ&lt;QR. From the vertex Q draw the altitude QQ1, the angle bisector QQ2 and the median QQ3, with Q1,Q2,Q3 lying on PR. Then

Answer»

Let PQR be an acute-angled triangle in which PQ<QR. From the vertex Q draw the altitude QQ1, the angle bisector QQ2 and the median QQ3, with Q1,Q2,Q3 lying on PR. Then

19.

logx+ log( xy8)/(log x)2+(log y)2=2 &amp; logy+log(x8/y)/(log x)2+(log y)2=0( where base of log is 10 ) compute the product of(xy).

Answer»

logx+ log( xy8)/(log x)2+(log y)2=2 & logy+log(x8/y)/(log x)2+(log y)2=0( where base of log is 10 ) compute the product of(xy).

20.

If the roots of x​​​​​​3+px​​​​​2+qx+r=0 are in G.P find the relation between p,q,r

Answer»

If the roots of x​​​​​​3+px​​​​​2+qx+r=0 are in G.P find the relation between p,q,r

21.

find the number of ways of selecting 9 balls from 6 red balls, 5 white balls ,5 blueballs if each selections consists of 3 balls of each colour.

Answer» find the number of ways of selecting 9 balls from 6 red balls, 5 white balls ,5 blueballs if each selections consists of 3 balls of each colour.
22.

If f(x)={x,x≤1x2+bx+c,x&gt;1 is a differentiable function, then the value of 5c−8b is

Answer» If f(x)={x,x1x2+bx+c,x>1
is a differentiable function, then the value of 5c8b is
23.

If a∈R&amp;b∈R, then the equation x2−abx−a2=0 has ________.

Answer»

If aR&bR, then the equation x2abxa2=0 has ________.


24.

The equation of a tangent to the parabola y2=8x which makes an angle 45∘ with the line y=3x+5 is

Answer»

The equation of a tangent to the parabola y2=8x which makes an angle 45 with the line y=3x+5 is

25.

Why do we use only X and Y as coordinate axes why can't we use A,B,C,P,Q,R etc

Answer»

Why do we use only X and Y as coordinate axes why can't we use A,B,C,P,Q,R etc

26.

The point(s) on y− axis which is equidistant from the points (12,3) and (−5,10) is/are

Answer»

The point(s) on y axis which is equidistant from the points (12,3) and (5,10) is/are

27.

For how many cases, D is an answer for at least one of the questions?

Answer»

For how many cases, D is an answer for at least one of the questions?


28.

In the expansion of ((5)12+(7)18)1024, the number of integral terms is

Answer»

In the expansion of ((5)12+(7)18)1024, the number of integral terms is

29.

5(8x+3)=9(4x+7)

Answer» 5(8x+3)=9(4x+7)
30.

if Z1 +Z2 = real number then is it mandatary that Z2=cojugate(Z1) From my thinking it is not because Z1=4+2i and Z2 =3-2i where Z1 is not the conjugate of Z2 but it is clear that Z1+Z2 = 7 a real number But there is issue in video module of jee complex no

Answer» if Z1 +Z2 = real number then is it mandatary that Z2=cojugate(Z1)

From my thinking it is not because
Z1=4+2i and Z2 =3-2i where Z1 is not the conjugate of Z2 but it is clear that Z1+Z2 = 7 a real number

But there is issue in video module of jee complex no
31.

The vector is one of the vectors that are linearly dependent with the vector 2^i+3^j

Answer»

The vector is one of the vectors that are linearly dependent with the vector 2^i+3^j

32.

px+qy=40 is a chord of minimum length of the circle (x−10)2+(y−20)2=729. If the chord passes through (5,15), then p2019+q2019 is equal to

Answer» px+qy=40 is a chord of minimum length of the circle (x10)2+(y20)2=729. If the chord passes through (5,15), then p2019+q2019 is equal to
33.

log7 log7 √7(√7√7)=

Answer» log7 log7 7(77)=
34.

The equations of the line passing through the point(1,2,-4) and perpendicularto the two lines x−83=y+19−16=z−107 and x−153=y−298=z−5−5, will be

Answer»

The equations of the line passing through the point(1,2,-4) and perpendicularto the two lines x83=y+1916=z107 and x153=y298=z55, will be


35.

The least value of cos2θ−6sinθcosθ+3sin2θ+2 is

Answer»

The least value of cos2θ6sinθcosθ+3sin2θ+2 is


36.

Let f:R→R be defined by f(x)=2x+6 which is a bijective mapping then f−1(x) is given by

Answer»

Let f:RR be defined by f(x)=2x+6 which is a bijective mapping then f1(x) is given by

37.

Shortest distance from origin to the curve y=ex+e−x2

Answer» Shortest distance from origin to the curve y=ex+ex2
38.

The value of cos−1(cos 5π3)+sin−1(sin 5π3) is

Answer»

The value of cos1(cos 5π3)+sin1(sin 5π3) is

39.

The number which should be added to the number added to the numbers 2, 14, 62 so that the resulting numbers may be in G.P. is

Answer»

The number which should be added to the number added to the numbers 2, 14, 62 so that the resulting numbers may be in G.P. is


40.

If 2 tan−1(cos x)=tan−1(2 cosec x) then the value of x is

Answer»

If 2 tan1(cos x)=tan1(2 cosec x) then the value of x is


41.

limx→0sin2xx is equal to

Answer»

limx0sin2xx is equal to


42.

X, Y, and Z are in Partnership, sharing profits and losses in the ratio of 3:2:1 respectively. Z's share in the profit is guaranteed by X and Y to be a minimum of Rs 8,000. The net profit for the year ended March 31, 2006 was Rs 30,000. Prepare profit and loss asppropriation account, indicating the amount final due to each partner.

Answer»

X, Y, and Z are in Partnership, sharing profits and losses in the ratio of 3:2:1 respectively. Z's share in the profit is guaranteed by X and Y to be a minimum of Rs 8,000. The net profit for the year ended March 31, 2006 was Rs 30,000. Prepare profit and loss asppropriation account, indicating the amount final due to each partner.

43.

Let two fair six - faced dice A and B be thrown simultaneously. If E1 is the event that die A shows up four, E2 is the event that die B shows up two and E3 is the event that the sum of numbers on both dice is odd, then which of the following statements is NOT true?

Answer»

Let two fair six - faced dice A and B be thrown simultaneously. If E1 is the event that die A shows up four, E2 is the event that die B shows up two and E3 is the event that the sum of numbers on both dice is odd, then which of the following statements is NOT true?


44.

In a large metropolitan area, the probabilities are 0.87, 0.36, 0.30 that a family (randomly chosen for a sample survey) owns a colour television set, a black and white television set, or both kinds of sets. What is the probability that a family owns either any one or both kinds of sets ?

Answer»

In a large metropolitan area, the probabilities are 0.87, 0.36, 0.30 that a

family (randomly chosen for a sample survey) owns a colour television set,

a black and white television set, or both kinds of sets. What is the

probability that a family owns either any one or both kinds of sets ?

45.

If A={x:x=3n,nϵZ} and B={x:x=4n,nϵZ} then find A∩B.

Answer»

If A={x:x=3n,nϵZ} and B={x:x=4n,nϵZ} then find AB.

46.

If the coefficient of variation of certain distribution is 60 and their standard deviation is 21,then its mean is

Answer»

If the coefficient of variation of certain distribution is 60 and their standard deviation is 21,then its mean is


47.

Let a1a2,b1b2,c1c2 be the consecutive terms of an arithmetic progression. If a1x2+2b1x+c1=0 and a2x2+2b2x+c2=0 have a common root, then a2,b2,c2 are in

Answer»

Let a1a2,b1b2,c1c2 be the consecutive terms of an arithmetic progression. If a1x2+2b1x+c1=0 and a2x2+2b2x+c2=0 have a common root, then a2,b2,c2 are in

48.

If k+5Pk+1 = 11(k−1)2 k+3Pk, then the values of k are

Answer»

If k+5Pk+1 = 11(k1)2 k+3Pk, then the values of k are


49.

The sum of the series 23+89+2627+8081+... to n term is

Answer»

The sum of the series 23+89+2627+8081+... to n term is


50.

Let z0 be a root of the quadratic equation, x2+x+1=0. If z=3+6iz810−3iz930, then argz is equal to :

Answer»

Let z0 be a root of the quadratic equation, x2+x+1=0. If z=3+6iz8103iz930, then argz is equal to :