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.

Differentiate the following functions with respect to x : a0xn+a1xn−1+a2xn−2+....+an−1x+an.

Answer»

Differentiate the following functions with respect to x :

a0xn+a1xn1+a2xn2+....+an1x+an.

2.

If tan2 45° – cos230° = x sin 45° cos 45° then x = ?(a) 2(b) –2(c) 12(d) -12

Answer» If tan2 45° – cos230° = x sin 45° cos 45° then x = ?



(a) 2



(b) –2



(c) 12



(d) -12
3.

If for all real values of x,4x2+164x2−96 x sin α+5<132, then α lies in the interval.

Answer»

If for all real values of x,4x2+164x296 x sin α+5<132, then α lies in the interval.

4.

The distance between the plane →r.(^i+5^j+^k)=5 and the line →r=2^i−2^j+3^k+λ(^i−^j+4^k) is

Answer»

The distance between the plane r.(^i+5^j+^k)=5
and the line r=2^i2^j+3^k+λ(^i^j+4^k) is

5.

A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.

Answer» A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.
6.

Let two matrices A=⎡⎢⎣12ωω23−152iω⎤⎥⎦ and B=⎡⎢⎣231i2ω⎤⎥⎦, where i2=−1 and ω is a cube root of unity. Then which of the following statement(s) is(are) correct ?

Answer»

Let two matrices A=12ωω23152iω and B=231i2ω, where i2=1 and ω is a cube root of unity. Then which of the following statement(s) is(are) correct ?


7.

If cos(2sin−1x)=19, then x=

Answer»

If cos(2sin1x)=19, then x=

8.

If a+43b8-6=2a+2b+28a-8b, write the value of a − 2b.

Answer» If a+43b8-6=2a+2b+28a-8b, write the value of a − 2b.
9.

For any two complex numbers z 1 and z 2 , prove that Re (z 1 z 2 ) = Re z 1 Re z 2 – Im z 1 Im z 2

Answer» For any two complex numbers z 1 and z 2 , prove that Re (z 1 z 2 ) = Re z 1 Re z 2 – Im z 1 Im z 2
10.

The number of integral values of k that satisfy the equation 8sinx+3=2k is equal to

Answer» The number of integral values of k that satisfy the equation 8sinx+3=2k is equal to
11.

36. The straight lines whose direction cosines are given by al+bm+can=0, fmn+gnl+hlm=0 are perpendicular if (1) f/a + g/b + h/c =0 (2) a/f + b/g + c/h =0 (3) af = bg = ch (4) a/f =b/g = c/h

Answer» 36. The straight lines whose direction cosines are given by al+bm+can=0, fmn+gnl+hlm=0 are perpendicular if (1) f/a + g/b + h/c =0 (2) a/f + b/g + c/h =0 (3) af = bg = ch (4) a/f =b/g = c/h
12.

Sum upto n terms of the series yn=1+(1+x)+(1+x+x2)+(1+x+x2+x3)+⋯+(1+x+x2+⋯+xn) is true for n∈N, then yn is

Answer»

Sum upto n terms of the series yn=1+(1+x)+(1+x+x2)+(1+x+x2+x3)++(1+x+x2++xn) is true for nN, then yn is



13.

Let f (x) be a function such that f (x) = x - [x], where [x] is the greatest integer less than or equal to x. Then the number of solutions of the equation f(x)+f(1x)=1 is (are)

Answer»

Let f (x) be a function such that f (x) = x - [x], where [x] is the greatest integer less than or equal to x. Then the number of solutions of the equation f(x)+f(1x)=1 is (are)


14.

If f is strictly increasing and positive function, such that xx∫0(1−t)sin(f(t))dt=2x∫0tsin(f(t))dt, where x&gt;0. Then the value of f′(x)cotf(x)+31+x in the domain of f(x) is

Answer» If f is strictly increasing and positive function, such that xx0(1t)sin(f(t))dt=2x0tsin(f(t))dt, where x>0. Then the value of f(x)cotf(x)+31+x in the domain of f(x) is
15.

Evaluate ∫cosxcos(x−a)dx(where C is constant of integration)

Answer»

Evaluate cosxcos(xa)dx

(where C is constant of integration)

16.

The minimum integral value of x for which 2x2+2x+n&gt;9+sin−1(sin(−1))+cos−1(cos(−1)) ∀x∈R, is

Answer» The minimum integral value of x for which 2x2+2x+n>9+sin1(sin(1))+cos1(cos(1)) xR, is
17.

If 4 numbers are to be selected from 1,2,3,......25 such that they are be in AP, then number of ways of selecting numbers are

Answer» If 4 numbers are to be selected from 1,2,3,......25 such that they are be in AP, then number of ways of selecting numbers are
18.

The value of ∫(cosxtanx)dx is(where C is constant of integration)

Answer»

The value of (cosxtanx)dx is

(where C is constant of integration)



19.

Evaluate the following integrals:∫28x-5 dx

Answer» Evaluate the following integrals:

28x-5 dx
20.

The domain of the function f(x)=√|1−x|(|x|−1)(4−|x|)|x−2| is

Answer»

The domain of the function f(x)=|1x|(|x|1)(4|x|)|x2| is

21.

Determine the domain and range of the relation R defined by (i) R={(x,x+5):xϵ(0,1,2,3,4,5)} (ii) R={(x,x3):x is a prime number less than 10}.

Answer»

Determine the domain and range of the relation R defined by

(i) R={(x,x+5):xϵ(0,1,2,3,4,5)}

(ii) R={(x,x3):x is a prime number less than 10}.

22.

An alternating current is given by I=i1 cosωt+i2 sinωt. The rms current is given by

Answer»

An alternating current is given by I=i1 cosωt+i2 sinωt. The rms current is given by

23.

Find out the wrong number in the series given below :3,15,34,63,99,143

Answer»

Find out the wrong number in the series given below :

3,15,34,63,99,143

24.

If f(x) is polynomial of degree 3 with leading coefficient 2 and f(1)=4,f(2)=7,f(3)=12 and f(5)=11α−1, then α=

Answer»

If f(x) is polynomial of degree 3 with leading coefficient 2 and f(1)=4,f(2)=7,f(3)=12 and f(5)=11α1, then α=

25.

Find the values of x forwhichisan increasing function.

Answer»

Find the values of x for
whichis
an increasing function.

26.

Let f and g be real functions, defined by f(x)=√x+2 and g(x)=√4−x2. Find (i) (f+g)(x) (ii) (f−g)(x) (iii) (fg)(x) (iv) (ff)(x) (v) (gg)(x) (vi) (fg)(x)

Answer»

Let f and g be real functions, defined by f(x)=x+2 and g(x)=4x2. Find

(i) (f+g)(x)

(ii) (fg)(x)

(iii) (fg)(x)

(iv) (ff)(x)

(v) (gg)(x)

(vi) (fg)(x)

27.

For a given set X={2,4,6}, tap the bubbles having a subset of X.

Answer»

For a given set X={2,4,6}, tap the bubbles having a subset of X.

28.

If the tangent to y2=4ax at the point (at2,2at) where |t|&gt;1 is a normal to x2−y2=a2 at the point (asecθ,atanθ), then

Answer»

If the tangent to y2=4ax at the point (at2,2at) where |t|>1 is a normal to x2y2=a2 at the point (asecθ,atanθ), then

29.

If the angle of elevation of a cloud from a point P which is 25 m above a lake be 30∘ and the angle of depression of reflection of the cloud in the lake from P be 60∘, then the height of the cloud (in meters) from the surface of the lake is :

Answer»

If the angle of elevation of a cloud from a point P which is 25 m above a lake be 30 and the angle of depression of reflection of the cloud in the lake from P be 60, then the height of the cloud (in meters) from the surface of the lake is :

30.

If the asymptotes of the hyperbola (x+y+1)2−(x−y−3)2=5 cuts each other at A and the coordinate axes at B and C, then radius of the circle passing through the points A, B, C is

Answer»

If the asymptotes of the hyperbola (x+y+1)2(xy3)2=5 cuts each other at A and the coordinate axes at B and C, then radius of the circle passing through the points A, B, C is


31.

Find the angle between X-axis and the line joining the points (3, -1) and (4, -2).

Answer»

Find the angle between X-axis and the line joining the points (3, -1) and (4, -2).

32.

what is the value of 1/4πε

Answer» what is the value of 1/4πε
33.

The conditional (p∧q)⇒p is ___.

Answer»

The conditional (pq)p is ___.



34.

Question 110The following data represents the approximate percentage of water in varioous oceans. Prepare a pie chart of the given data.OceanPercentage of waterPacific40%Atlantic30%Indian20%Others10%

Answer»

Question 110



The following data represents the approximate percentage of water in varioous oceans. Prepare a pie chart of the given data.

OceanPercentage of waterPacific40%Atlantic30%Indian20%Others10%



35.

In a class, for a competition, atleast 3 students are needed. Which of the following graph shows the inequality for this situation?

Answer»

In a class, for a competition, atleast 3 students are needed. Which of the following graph shows the inequality for this situation?

36.

If xsin(yx)dy=[ysin(yx)−x]dx,x&gt;0 and y(1)=π2 then the value of cos(yx) is

Answer»

If xsin(yx)dy=[ysin(yx)x]dx,x>0 and y(1)=π2 then the value of cos(yx) is

37.

Mark the correct alternative in the following question:A number is as much greater than 31 as it is less than 81. The number is(a) 46 (b) 56 (c) 66 (d) 76

Answer» Mark the correct alternative in the following question:



A number is as much greater than 31 as it is less than 81. The number is



(a) 46 (b) 56 (c) 66 (d) 76
38.

If z=x+iy and Re(z2)=0, then the locus of z can be

Answer»

If z=x+iy and Re(z2)=0, then the locus of z can be

39.

If the minimum area of the triangle formed by a tangent to the ellipse x2b2+y24a2=1 and the coordinate axis is kab, then k is equal to

Answer» If the minimum area of the triangle formed by a tangent to the ellipse x2b2+y24a2=1 and the coordinate axis is kab, then k is equal to
40.

ax+by-c=0, bx+ay=1+c find value of x and

Answer» ax+by-c=0, bx+ay=1+c find value of x and
41.

For certain values of a,m and b, the functionf(x)=⎧⎨⎩3,x=0−x2+3x+a,0&lt;x&lt;1mx+b,1≤x≤2 satisfies the hypothesis of the mean value theorem for the interval [0,2]. Then the value of a+b+m is

Answer»

For certain values of a,m and b, the function

f(x)=3,x=0x2+3x+a,0<x<1mx+b,1x2 satisfies the hypothesis of the mean value theorem for the interval [0,2]. Then the value of a+b+m is

42.

The set of values of x which satisfy the inequality cos−1(4xf(x)π)≤π3; where f(x)=(sin−1x)2+πcos−1x−(cos−1x)2 is

Answer»

The set of values of x which satisfy the inequality cos1(4xf(x)π)π3; where f(x)=(sin1x)2+πcos1x(cos1x)2 is

43.

Show that the function defined by is discontinuous at all integral point. Here denotes the greatest integer less than or equal to x .

Answer» Show that the function defined by is discontinuous at all integral point. Here denotes the greatest integer less than or equal to x .
44.

The number of ways in which the letters of the word TRIANGLE can be arranged such that two vowels do not occur together is

Answer»

The number of ways in which the letters of the word TRIANGLE can be arranged such that two vowels do not occur together is



45.

Let f:R→R be a function such that f(2)=4 and f′(2)=1. Then, the value of limx→2x2f(2)−4f(x)x−2 is equal to

Answer»

Let f:RR be a function such that f(2)=4 and f(2)=1. Then, the value of limx2x2f(2)4f(x)x2 is equal to

46.

If line x+1λ=y-11=z+2-4 is perpendicular to the plane 2x+2y-8z+5=0. Then the value of λ is _____________.

Answer» If line x+1λ=y-11=z+2-4 is perpendicular to the plane 2x+2y-8z+5=0. Then the value of λ is _____________.
47.

If distance between coordinates (p,4) and (-3,5) is 56, then find the the value of p.

Answer» If distance between coordinates (p,4) and (-3,5) is 56, then find the the value of p.
48.

In a GP, first term is a and the common ratio is r. If A and H are the arithmetic means and harmonic means respectively for the first n terms of GP. Them A * H is equal to

Answer»

In a GP, first term is a and the common ratio is r. If A and H are the arithmetic means and harmonic means respectively for the first n terms of GP. Them A * H is equal to


49.

Thr period of the function : f(x)=3sin2{3x}+5cos3{2x} is (where {} denotes fraction part function)

Answer» Thr period of the function : f(x)=3sin2{3x}+5cos3{2x} is (where {} denotes fraction part function)
50.

Number of 2-digit numbers (having different digits), which are divisible by 5 is

Answer»

Number of 2-digit numbers (having different digits), which are divisible by 5 is