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.

The general solution of sinx+cosx=1 is

Answer»

The general solution of sinx+cosx=1 is

2.

The product of two of the four roots of the quadratic equation x4−183+kx2+200x−1984=0 is −32. Determine the value of k. (correct answer + 3, wrong answer 0)

Answer» The product of two of the four roots of the quadratic equation x4183+kx2+200x1984=0 is 32. Determine the value of k.
(correct answer + 3, wrong answer 0)
3.

If log xb−c=log yc−a=log za−b , then which of the following is/are true?

Answer»

If log xbc=log yca=log zab , then which of the following is/are true?

4.

Discuss the continuity and differentiability of the function f(x) = |x|+|x-1| in the interval (-1,2).

Answer»

Discuss the continuity and differentiability of the function f(x) = |x|+|x-1| in the interval (-1,2).

5.

The product of non-real roots of the equation (x2+x−2)(x2+x−3)=12 is

Answer»

The product of non-real roots of the equation (x2+x2)(x2+x3)=12 is

6.

The numerical value of 3(sinx−cosx)4+6(sinx+cosx)2+4(sin6x+cos6x) is​​​​​​​

Answer» The numerical value of 3(sinxcosx)4+6(sinx+cosx)2+4(sin6x+cos6x) is​​​​​​​
7.

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 6, 8} and B = {2, 3, 5, 7}, verify that (i) (A∪B)′=A′∩B′ (ii) (A∩B)′=A′∪B′

Answer»

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 6, 8} and B = {2, 3, 5, 7}, verify that

(i) (AB)=AB

(ii) (AB)=AB

8.

P(a)=0.8;;p(b)=0.5&p,(b/a)=0.4;;;;find p(a intersection b)

Answer» P(a)=0.8;;p(b)=0.5&p,(b/a)=0.4;;;;find p(a intersection b)
9.

If A is a square matrix such that A2=A, then write the value of 7A−(1+A)3, where I is an identify matrix.

Answer»

If A is a square matrix such that A2=A, then write the value of 7A(1+A)3, where I is an identify matrix.

10.

If A and B are any two events such that P(A)=12,P(B)=13, and P(A∩B)=14,then P(A′/B′)=

Answer»

If A and B are any two events such that P(A)=12,P(B)=13, and P(AB)=14,then P(A/B)=


11.

The value of 2sec−1 2+sin−1(12) is (a) π6 (b) 5π6 (c) 7π6 (d) 1

Answer»

The value of 2sec1 2+sin1(12) is

(a) π6 (b) 5π6 (c) 7π6 (d) 1

12.

If 1,2,1 are the direction ratios of a line then which of the following could be direction cosines of this line?

Answer» If 1,2,1 are the direction ratios of a line then which of the following could be direction cosines of this line?
13.

The sum of the solutions of the equation |x2−10x+21|=|x−3| is

Answer»

The sum of the solutions of the equation |x210x+21|=|x3| is

14.

limx→∞(13+132+133+....+13n)

Answer»

limx(13+132+133+....+13n)

15.

The coordinates of the focus of the parabola y2−x−2y+2=0 are

Answer»

The coordinates of the focus of the parabola y2x2y+2=0 are


16.

Find the coordinates of the centre of the circle inscribed in a triangle whose vertices are A(-36,7),B(20,7)and C(0,-8).

Answer»

Find the coordinates of the centre of the circle inscribed in a triangle whose vertices are A(-36,7),B(20,7)and C(0,-8).

17.

If 5 cos22x+4(cos2x+sin4x+cos6x+sin6x)=8, then

Answer»

If 5 cos22x+4(cos2x+sin4x+cos6x+sin6x)=8, then


18.

If y=sin x+ex,then d2xdy2=

Answer»

If y=sin x+ex,then d2xdy2=


19.

The range of f(x)=x2+14x+9x2+2x+3, x∈R is

Answer»

The range of f(x)=x2+14x+9x2+2x+3, xR is

20.

Find the equation of the curve passing through the point (0,π3) and satisfying the differential equation sinxcosy dx+cosxsiny dy=0, wherex,y∈(0,π2)

Answer»

Find the equation of the curve passing through the point (0,π3) and satisfying the differential equation sinxcosy dx+cosxsiny dy=0, wherex,y(0,π2)

21.

Integrate cosx/[ (1-sinx) (2-sinx) ] with respect to x

Answer» Integrate cosx/[ (1-sinx) (2-sinx) ] with respect to x
22.

Interval in which ‘a′ lies so that x3–3x+a=0 has three real and distinct roots.

Answer»

Interval in which a lies so that x33x+a=0 has three real and distinct roots.


23.

If ddx[1+x2+x41+x+x2]=ax+b then(a,b)=

Answer»

If ddx[1+x2+x41+x+x2]=ax+b then(a,b)=


24.

Evaluate ∣∣∣∣1xy1x+yy1xx+y∣∣∣∣

Answer»

Evaluate
1xy1x+yy1xx+y

25.

If (2x+3)(4−3x)3(x−4)x5(x+2)2≤0, then x∈

Answer»

If (2x+3)(43x)3(x4)x5(x+2)20, then x

26.

Let f:R→R be defined as f(x)=x4. Choose the correct answer. (a) f is one-one onto (b) f is many-one onto (c) f is one-one but not onto (d) f is neither one-one nor onto

Answer»

Let f:RR be defined as f(x)=x4. Choose the correct answer.
(a) f is one-one onto
(b) f is many-one onto
(c) f is one-one but not onto
(d) f is neither one-one nor onto

27.

If one side of a triangle is double the other and the angles opposite to these sides differ by 600, then the triangle is

Answer»

If one side of a triangle is double the other and the angles opposite to these sides differ by 600, then the triangle is


28.

The coefficient ofx103 in (1+x+x2+x3+x4)199.(x−1)201 is

Answer»

The coefficient ofx103 in (1+x+x2+x3+x4)199.(x1)201 is


29.

Select the conjunction which can be used to join the sentences. I would be delighted to accept your application, ___ you should have come in early for it to be valid.

Answer»

Select the conjunction which can be used to join the sentences.

I would be delighted to accept your application, ___ you should have come in early for it to be valid.


30.

Total number of terms in the expansion of (1-x-x^2)^5 is ________

Answer»

Total number of terms in the expansion of (1-x-x^2)^5 is ________

31.

Show that (1+|a|^2) (1+|b|^2)=|1-a.b|^2+|a+b+a×b|^2 . For any 2 vectors a and b

Answer»

Show that (1+|a|^2) (1+|b|^2)=|1-a.b|^2+|a+b+a×b|^2 . For any 2 vectors a and b

32.

∫a1x.a−[logax]dx=e−12, where a>1and [.] denotes the greatest integer function, then the value of a2is

Answer»

a1x.a[logax]dx=e12, where a>1and [.] denotes the greatest integer function, then the value of a2is


33.

Solution to the differential equation x+x33!+x55!+.......1+x22 +x44!+......=dx−dydx+dy is

Answer»

Solution to the differential equation x+x33!+x55!+.......1+x22 +x44!+......=dxdydx+dy is

34.

Solution of |x||x+1|=2 is

Answer»

Solution of |x||x+1|=2 is

35.

The result of 21 football matches (win,lose,draw) are to be predicted. The number of different forecasts that can contain 19 wins is

Answer»

The result of 21 football matches (win,lose,draw) are to be predicted. The number of different forecasts that can contain 19 wins is

36.

Y= x-[x] defined for N>N Is this function one,one or onto or both????

Answer»

Y= x-[x] defined for N>N

Is this function one,one or onto or both????

37.

Identify the function from the description given. 1. Its an irrational function 2. Its graph is mirror image of y =x2n about y = x, for some n ≥ 1, n ∈ I and x ≥ 0 3. x ≤ f(x) ≤ x1/6 if x ∈ [0, 1] 4. Its domain and range are [0, ∞)

Answer»

Identify the function from the description given.

1. Its an irrational function

2. Its graph is mirror image of y =x2n about y = x, for some n 1, n I and x 0

3. x f(x) x1/6 if x [0, 1]

4. Its domain and range are [0, )


38.

The value of the expression √3 cosec 20∘−sec20∘ is

Answer» The value of the expression 3 cosec 20sec20 is
39.

If cos A= mcos B and cot(A+B)2=λtan(B−A2) and λ is

Answer»

If cos A= mcos B and cot(A+B)2=λtan(BA2) and λ is


40.

Order and degree of differential equation are[MP PET 1996]

Answer»

Order and degree of differential equation are

[MP PET 1996]


41.

If P ≡ (0,1,0), Q ≡ (0,0,1), then projection of PQ on the plane x+ y + z = 3 is [EAMCET 2002]

Answer»

If P (0,1,0), Q (0,0,1), then projection of PQ on the plane x+ y + z = 3 is
[EAMCET 2002]


42.

sin−1|cosx|−cos−1|sinx|=a has at least one solution if a ∈

Answer» sin1|cosx|cos1|sinx|=a has at least one solution if a
43.

Given that tan A,tan B are the roots of the equation x2−px+q=0, then the value of sin2(A+B) is

Answer»

Given that tan A,tan B are the roots of the equation x2px+q=0, then the value of sin2(A+B) is

44.

A single letter is selected at random from the word ‘PROBABILITY’. The probability that it is a vowel is

Answer»

A single letter is selected at random from the word ‘PROBABILITY’. The probability that it is a vowel is


45.

R = { (T1 , T2) : T1 , T2 ϵ A and T1 is congruent to T2} Then the relation R is______

Answer»

R = { (T1 , T2) : T1 , T2 ϵ A and T1 is congruent to T2} Then the relation R is______


46.

The value of tan9∘⋅tan27∘⋅tan45∘⋅tan63∘⋅tan81∘ is

Answer» The value of tan9tan27tan45tan63tan81 is
47.

Let f(x)=∫10|t−x|t dt for all real x. Then the minimum value of f(x) is

Answer»

Let f(x)=10|tx|t dt for all real x. Then the minimum value of f(x) is

48.

The number of all possible value(s) of k for which the system of equations kx+y+z=k−1, x+ky+z=k−1, x+y+kz=k−1 has no solution is

Answer» The number of all possible value(s) of k for which the system of equations kx+y+z=k1, x+ky+z=k1, x+y+kz=k1 has no solution is
49.

Shape of O2F2 is similar to

Answer» Shape of O2F2 is similar to
50.

A die is thrown twice. What is the probability that at least one of the two throws come up with the number 3?

Answer»

A die is thrown twice. What is the probability that at least one of the two throws come up with the number 3?