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 f(x)=(h1(x)−h1(−x))(h2(x)−h2(−x))⋯(h2n+1(x)−h2n+1(−x)), where h1(x), h2(x),⋯⋯hn(x) are defined everywhere and f(200)=0, then f(x) is

Answer»

If f(x)=(h1(x)h1(x))(h2(x)h2(x))(h2n+1(x)h2n+1(x)), where h1(x), h2(x),hn(x) are defined everywhere and f(200)=0, then f(x) is


2.

Given below are four jumbled sentences. Select the option that gives their correct order.A: I should have charged double the amount, but it didn't occur to me then.B: Now, after all the expenses and the gardener's salary, I made a profit of only five hundred rupees.C: The jasmine plants flowered twice and I sold 250 grams of buds just for ten rupees.D: Had I charged at least twenty rupees, I would have made a good profit.

Answer»

Given below are four jumbled sentences. Select the option that gives their correct order.

A: I should have charged double the amount, but it didn't occur to me then.

B: Now, after all the expenses and the gardener's salary, I made a profit of only five hundred rupees.

C: The jasmine plants flowered twice and I sold 250 grams of buds just for ten rupees.

D: Had I charged at least twenty rupees, I would have made a good profit.

3.

Four distinct integers are picked at random from {0,1,2,3,4,5,6}. If the probability that among those selected, the second smallest is 3, is p, then 35p is equal to

Answer» Four distinct integers are picked at random from {0,1,2,3,4,5,6}. If the probability that among those selected, the second smallest is 3, is p, then 35p is equal to
4.

Check whether the tangents to the curve y=2x2−6x at the points (0,0) and (3,0) are at right angle or not?

Answer» Check whether the tangents to the curve y=2x26x at the points (0,0) and (3,0) are at right angle or not?
5.

If 15sin4α+10cos4α=6, for some α∈R, then the value of 27sec6α+8 cosec6α is equal to

Answer»

If 15sin4α+10cos4α=6, for some αR, then the value of 27sec6α+8 cosec6α is equal to

6.

Find the derivative of sin(x2)+(sin x)2+sin2(x2)

Answer»

Find the derivative of sin(x2)+(sin x)2+sin2(x2)

7.

The integral of a certain graph is given by A=(1+3x)12−1; x≥0. The average value of A w.r.t. x as x increases from 1 to 8 is

Answer»

The integral of a certain graph is given by A=(1+3x)121; x0. The average value of A w.r.t. x as x increases from 1 to 8 is


8.

Differentiate: tanx/x^2

Answer» Differentiate: tanx/x^2
9.

विद्यार्थी संघ के मंत्री अविनाश बाबू के झंडा गाड़ने पर क्या प्रतिक्रिया हुई?

Answer»

विद्यार्थी संघ के मंत्री अविनाश बाबू के झंडा गाड़ने पर क्या प्रतिक्रिया हुई?

10.

The value of x in (0,π) which satisfy the equation8−+|cosx|+cos2x+|cos3x|+⋯to∞=43 is

Answer»

The value of x in (0,π) which satisfy the equation

8+|cosx|+cos2x+|cos3x|+to=43 is

11.

Letbefixed real numbers and define a functionWhatisf(x)?For some computef(x).

Answer»

Letbe
fixed real numbers and define a function



What
isf(x)?
For some

computef(x).

12.

Solve:- ​​​​​​​(1.6×109)×(5.0×10-3)

Answer» Solve:-
​​​​​​​(1.6×109)×(5.0×10-3)
13.

18. A cube is painted red on all faces and divided into 27 smaller cubes of equal size. Now a small cube from each corner is removed . How many cubes are there which have none of their face coloured?

Answer» 18. A cube is painted red on all faces and divided into 27 smaller cubes of equal size. Now a small cube from each corner is removed . How many cubes are there which have none of their face coloured?
14.

Let OABC be a tetrahedron (O being the origin). If position vectors of A, B and C are ^i,^i+^j and ^j+^k respectively, then height of the tetrahedron (taking ABC as base) is equal to

Answer» Let OABC be a tetrahedron (O being the origin). If position vectors of A, B and C are ^i,^i+^j and ^j+^k respectively, then height of the tetrahedron (taking ABC as base) is equal to
15.

N characters of information are held on magnetic tape, in batches of x character each; the batch processing time is α+βx2 seconds, α, β are constants. The optimum value of x for fast processing is

Answer»

N characters of information are held on magnetic tape, in batches of x character each; the batch processing time is α+βx2 seconds, α, β are constants. The optimum value of x for fast processing is


16.

If f(x)=sin[tan−1(1−x22x)+cos−1(1−x21+x2)] ∀ x∈(0,1), then the value of f′(x) is

Answer» If f(x)=sin[tan1(1x22x)+cos1(1x21+x2)] x(0,1), then the value of f(x) is
17.

Define a relation R on the set N of natural numbers by R = {( x , y ): y = x + 5, x is a natural number less than 4; x , y ∈ N }. Depict this relationship using roster form. Write down the domain and the range.

Answer» Define a relation R on the set N of natural numbers by R = {( x , y ): y = x + 5, x is a natural number less than 4; x , y ∈ N }. Depict this relationship using roster form. Write down the domain and the range.
18.

The equation of the plane passing through the point (4,5,1),(0,−1,−1) and (−4,4,4), is

Answer»

The equation of the plane passing through the point (4,5,1),(0,1,1) and (4,4,4), is

19.

sin (50° + θ) – cos (40° – θ) + tan 1° tan 10° tan 20° tan 70° tan 80° tan 89°

Answer» sin (50° + θ) – cos (40° – θ) + tan 1° tan 10° tan 20° tan 70° tan 80° tan 89°
20.

The maximum integral value of a for which the equation asinx+cos2x=2a−7 has a solution is :

Answer»

The maximum integral value of a for which the equation asinx+cos2x=2a7 has a solution is :

21.

The value of (cosθ+sinθ+1)(cosθ+sinθ−1)−2sinθcosθ is

Answer»

The value of (cosθ+sinθ+1)(cosθ+sinθ1)2sinθcosθ is

22.

Find r if (i) 5Pr=2 6Pr−1 (ii) 5Pr= 6Pr−1

Answer» Find r if (i) 5Pr=2 6Pr1 (ii) 5Pr= 6Pr1
23.

If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is

Answer»

If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is


24.

If a, b, c arein A.P,; b, c, d are in G.P and arein A.P. prove that a, c, e are in G.P.

Answer»

If a, b, c are
in A.P,; b, c, d are in G.P and
are
in A.P. prove that a, c, e are in G.P.

25.

The domain of the function f(x)=11−{x} is(where {.} denotes the fractional part of x)

Answer»

The domain of the function f(x)=11{x} is

(where {.} denotes the fractional part of x)

26.

If P(n) : 49n+16n+λ is divisible by 64 for nϵN is true. then the least negative integral value of λ is

Answer»

If P(n) : 49n+16n+λ is divisible by 64 for nϵN is true. then the least negative integral value of λ is

27.

A guard of 12 men is formed from a group of n soldiers in all possible ways. If the number of times two particular soldiers A and B are together on guardis thrice the number of times there particular soldiers C,D,E are together on gurard, then n =

Answer»

A guard of 12 men is formed from a group of n soldiers in all possible ways. If the number of times two particular soldiers A and B are together on guardis thrice the number of times there particular soldiers C,D,E are together on gurard, then n =


28.

Let f:R→R be defined asf(x)=⎧⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎩λ|x2−5x+6|μ(5x−x2−6),x<2e tan(x−2)x−[x],x>2 μ ,x=2where [x] is the greatest integer less than or equal to x. If f is continuous at x=2, then λ+μ is equal to

Answer»

Let f:RR be defined as

f(x)=



















λ|x25x+6|μ(5xx26),x<2e tan(x2)x[x],x>2 μ ,x=2


where [x] is the greatest integer less than or equal to x. If f is continuous at x=2, then λ+μ is equal to

29.

A die is rolled and two events A and B are defined as follows.A: An odd number turns upB: A prime Number turns upFind the value of 36 P(A ∪ B).___

Answer»

A die is rolled and two events A and B are defined as follows.

A: An odd number turns up

B: A prime Number turns up



Find the value of 36 P(A B).


___
30.

If y=sinx1+cosx1+sinx1+cosx1+⋯∞, then dxdy at x=π2 is

Answer» If y=sinx1+cosx1+sinx1+cosx1+, then dxdy at x=π2 is
31.

The length of the curve y=23x3/2 between x=0 and x=1 is

Answer»

The length of the curve y=23x3/2 between x=0 and x=1 is

32.

Question 2 (ii)For which value of k will the following pair of linear equations have no solution?3x + y = 1(2k -1)x + (k -1)y = 2k + 1

Answer»

Question 2 (ii)

For which value of k will the following pair of linear equations have no solution?

3x + y = 1

(2k -1)x + (k -1)y = 2k + 1



33.

If 3A=⎡⎢⎣−1−2−221−2x−2y⎤⎥⎦T such that AAT=I, then which of the following is/are correct

Answer»

If 3A=122212x2yT such that AAT=I, then which of the following is/are correct

34.

If PQ is a double ordinate of the hyperbola x2a2−y2b2=1 such that OPQ is an equilateral triangle, O being the centre of the hyperbola, then the eccentricity e of the hyperbola satisfies

Answer»

If PQ is a double ordinate of the hyperbola x2a2y2b2=1 such that OPQ is an equilateral triangle, O being the centre of the hyperbola, then the eccentricity e of the hyperbola satisfies

35.

Let f(x)=x2−2x+1, then the value of c that satisfy the LMVT for the function on the interval [0,1] is

Answer»

Let f(x)=x22x+1, then the value of c that satisfy the LMVT for the function on the interval [0,1] is

36.

If f(x) and g(x) are two functions of x, then the integration of product of f(x) and g(x) is:

Answer»

If f(x) and g(x) are two functions of x, then the integration of product of f(x) and g(x) is:


37.

Evaluate }∫ x^2\cdot\operatorname{sin}(x^3)\cdot dx

Answer» Evaluate }∫ x^2\cdot\operatorname{sin}(x^3)\cdot dx
38.

A merchant plans to sell two types of personal computers − a desktop model and a portable model that will cost Rs 25000 and Rs 40000 respectively. He estimates that the total monthly demand of computers will not exceed 250 units. Determine the number of units of each type of computers which the merchant should stock to get maximum profit if he does not want to invest more than Rs 70 lakhs and if his profit on the desktop model is Rs 4500 and on portable model is Rs 5000.

Answer» A merchant plans to sell two types of personal computers − a desktop model and a portable model that will cost Rs 25000 and Rs 40000 respectively. He estimates that the total monthly demand of computers will not exceed 250 units. Determine the number of units of each type of computers which the merchant should stock to get maximum profit if he does not want to invest more than Rs 70 lakhs and if his profit on the desktop model is Rs 4500 and on portable model is Rs 5000.
39.

The numbers 1,2,3 and 4 are written separately on four slips of paper. The slips are put in a box and mixed thoroughly. A person draws two slips from the box, one after the other, without replacement. Describe the sample space for the experiment.

Answer» The numbers 1,2,3 and 4 are written separately on four slips of paper. The slips are put in a box and mixed thoroughly. A person draws two slips from the box, one after the other, without replacement. Describe the sample space for the experiment.
40.

If 2(1+tanα+tan2α+⋯∞)=√3+1, where 0&lt;α&lt;π4, then the sum of the solutions of the equation sinθ=sinα in [0,4π] is equal to

Answer»

If 2(1+tanα+tan2α+)=3+1, where 0<α<π4, then the sum of the solutions of the equation sinθ=sinα in [0,4π] is equal to

41.

If the greatest value of the term independent of x in the expansion of (xsinα+acosαx)10 is 10!(5!)2, then the value of a is equal to

Answer»

If the greatest value of the term independent of x in the expansion of (xsinα+acosαx)10 is 10!(5!)2, then the value of a is equal to

42.

Let and . Verify that

Answer» Let and . Verify that
43.

A line passing througjh the point of intersection of x+y=4 and x−y=2 makes an angle of tan−134 with the x axis. It intersects the parabola y2=4(x−3) at point (x1,y1) and (x2,y2) respectively. Then |x1−x2| is equal to;

Answer»

A line passing througjh the point of intersection of x+y=4 and xy=2 makes an angle of tan134 with the x axis. It intersects the parabola y2=4(x3) at point (x1,y1) and (x2,y2) respectively. Then |x1x2| is equal to;

44.

Fot the function f(x)=ex+1ex−1, If n(d) denotes the number of integers which are not in its domain and n(r) denotes the number of integers which are not in its range,then n(d)+n(r) is equal to

Answer» Fot the function f(x)=ex+1ex1, If n(d) denotes the number of integers which are not in its domain and n(r) denotes the number of integers which are not in its range,then n(d)+n(r) is equal to
45.

124.If for the two vectors ,vector A and vector B ,the sum of vectors is perpendicular to their difference .the ratio of their magnitude is. a)1 b)2. c)3 d)4

Answer» 124.If for the two vectors ,vector A and vector B ,the sum of vectors is perpendicular to their difference .the ratio of their magnitude is. a)1 b)2. c)3 d)4
46.

log2536= ?

Answer»

log2536= ?


47.

Using Binomial Theorem, evaluate (96)3

Answer»

Using Binomial Theorem, evaluate (96)3

48.

Prove the following trigonometric identities.cos θcosec θ+1+cos θcosec θ-1=2 tan θ

Answer» Prove the following trigonometric identities.



cos θcosec θ+1+cos θcosec θ-1=2 tan θ
49.

For what values of x, the numbers −27,x,−72 are in G.P ?

Answer» For what values of x, the numbers 27,x,72 are in G.P ?
50.

limx→4x3−64x2−16

Answer»

limx4x364x216