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→∞1−cosxcos2xcos3xsin22x is equal to

Answer» limx1cosxcos2xcos3xsin22x is equal to
2.

For how many values of p, the circle x2+y2+2x+4y−p=0 and the coordinate axes have exactly three common points? . ​​​​

Answer» For how many values of p, the circle x2+y2+2x+4yp=0 and the coordinate axes have exactly three common points? .
​​​​
3.

If the Nominal GDP is Rs 1,200 and Price Index (with base = 100) is 120. Calculate Real GDP.

Answer»

If the Nominal GDP is Rs 1,200 and Price Index (with base = 100) is 120. Calculate Real GDP.

4.

Let ω≠1 be a cube root of unity. Then the minimum of the set {|a+bω+cω2|2:a,b,c distinct non-zero integers} equals

Answer» Let ω1 be a cube root of unity. Then the minimum of the set
{|a+bω+cω2|2:a,b,c distinct non-zero integers} equals
5.

Three children are selected at random from a group of 6 boys and 4 girls. It is known that in this group exactly one girl and one boy belong to same parent. The probability that the selected group of children have no blood relations, is equal to

Answer»

Three children are selected at random from a group of 6 boys and 4 girls. It is known that in this group exactly one girl and one boy belong to same parent. The probability that the selected group of children have no blood relations, is equal to

6.

If the roots of a(b−c)x2+b(c−a)x+c(a−b) = 0 be equal then a,b,c are in

Answer»

If the roots of a(bc)x2+b(ca)x+c(ab) = 0 be equal then a,b,c are in


7.

If a,b,c are in A.P., then abc,1c,2b are in

Answer»

If a,b,c are in A.P., then abc,1c,2b are in


8.

If z=1+cos6π5+isin6π5 , then

Answer»

If z=1+cos6π5+isin6π5 , then

9.

f(x)=⎧⎨⎩√1+px−√1−pxx:−1≤x<02x+1x−2:0≤x≤1 Is continuous in the interval [-1, 1], then p is equal to:

Answer» f(x)=1+px1pxx:1x<02x+1x2:0x1
Is continuous in the interval [-1, 1], then p is equal to:
10.

Let A (12,0),B(32,0),C(52,0) be the given points and P be a point satisfying max (PA+PB,PB+PC)&lt; 2. The area of the region of the point P is

Answer»

Let A (12,0),B(32,0),C(52,0) be the given points and P be a point satisfying max (PA+PB,PB+PC)< 2.

The area of the region of the point P is


11.

Equation of line passing through the point (2, 3, 1) and parallel to the line of intersection of the plane x – 2y – z + 5 = 0 and x + y + 3z = 6 is

Answer»

Equation of line passing through the point (2, 3, 1) and parallel to the line of intersection of the plane x – 2y – z + 5 = 0 and x + y + 3z = 6 is


12.

Find the general situation of sin−1(dy/dx)=x+y using variable separable method.

Answer»

Find the general situation of sin1(dy/dx)=x+y using variable separable method.

13.

If →A = 3^i + ^j + 2^k and →B = 2^i − 2^j + 4^k then find the value of |→A×→B|.

Answer»

If A = 3^i + ^j + 2^k and B = 2^i 2^j + 4^k then find the value of |A×B|.


14.

Find the values of m for which the roots of quadratic equation x2 - (m - 3) x + m = 0 lies between 1 and 2.

Answer»

Find the values of m for which the roots of quadratic equation x2 - (m - 3) x + m = 0 lies between 1 and 2.


15.

If cosα+2cosβ+3cosγ=sinα+2sinβ+3sinγ=0, then

Answer»

If cosα+2cosβ+3cosγ=sinα+2sinβ+3sinγ=0, then

16.

The complete solution set of 4cot2θ=cot2θ−tan2θ is

Answer»

The complete solution set of 4cot2θ=cot2θtan2θ is

17.

Find the distance between the points P and Q having coordinates (-2, 3, 1) and (2, 1, 3.)

Answer»

Find the distance between the points P and Q having coordinates (-2, 3, 1) and (2, 1, 3.)

18.

Differentiate the following questions w.r.t. x. ex3

Answer»

Differentiate the following questions w.r.t. x.

ex3

19.

Find the principal values of the following questions: tan−1(−1)

Answer»

Find the principal values of the following questions:

tan1(1)

20.

Evaluate the definite integrals. ∫21(4x3−5x2+6x+9)dx

Answer»

Evaluate the definite integrals.
21(4x35x2+6x+9)dx

21.

∫x√x+1dx

Answer»

xx+1dx

22.

Evaluate the definite integrals. ∫101√1+x−√xdx.

Answer»

Evaluate the definite integrals.
1011+xxdx.

23.

cos−1(cos7π6) is equal to a) 7π6 b) 5π6 c) π3 d) π6

Answer»

cos1(cos7π6) is equal to
a) 7π6
b) 5π6
c) π3
d) π6

24.

If A ={1,2,3,4}, define relations on A which have properties of being (i) Reflexive, transitive but not symmetric. (ii) symmetric but neither reflexive nor transitive. (iii) reflexive,symmetric and transitive.

Answer»

If A ={1,2,3,4}, define relations on A which have properties of being
(i) Reflexive, transitive but not symmetric.

(ii) symmetric but neither reflexive nor transitive.

(iii) reflexive,symmetric and transitive.

25.

Show that the semi-vertical angle of the right circular cone of given surface area and maximum volume is sin−1(13)

Answer»

Show that the semi-vertical angle of the right circular cone of given surface area and maximum volume is sin1(13)

26.

Prepare double column cash book from teh following information for September 2010 Rs.1Cash in hand7,500Bank overdraft3,5003Paid wages2005Cash sales7,00010Cash deposited into bank4,00015Goods purchased and paid by cheque2,00020Paid rent50025Drew from bank for personal use50030Salary paid1,000

Answer»

Prepare double column cash book from teh following information for September 2010

Rs.1Cash in hand7,500Bank overdraft3,5003Paid wages2005Cash sales7,00010Cash deposited into bank4,00015Goods purchased and paid by cheque2,00020Paid rent50025Drew from bank for personal use50030Salary paid1,000

27.

Let ‘E’ be the ellipse x29+y24=1 and 'C' be the circle x2+y2=9. Let P and Q be the points (1, 2) and (2, 1) respectively. Then:

Answer»

Let ‘E’ be the ellipse x29+y24=1 and 'C' be the circle x2+y2=9. Let P and Q be the points (1, 2) and (2, 1) respectively. Then:


28.

Prove that:(2n)!/n! = { 1*3*5....(2n-1)} 2n

Answer» Prove that:(2n)!/n! = { 1*3*5....(2n-1)} 2n
29.

The greatest integer among following by which the number 5^5+7^5 is divisible? a) 6 b) 8 c) 11 d) 12 I am not sure from which chapter this question belongs to.....

Answer»

The greatest integer among following by which the number 5^5+7^5 is divisible?

a) 6

b) 8

c) 11

d) 12

I am not sure from which chapter this question belongs to.....

30.

If cos(a+b)=4/5, sin(a-b)=5/13 and 0&lt;a,b&lt;pi/4, then tan2a=?

Answer»

If cos(a+b)=4/5, sin(a-b)=5/13 and 0<a,b<pi/4, then tan2a=?

31.

tan−1a+tan−1b, where a&gt;0,b&gt;0,ab&gt;1, is equal to

Answer»

tan1a+tan1b, where a>0,b>0,ab>1, is equal to


32.

The value of (127)1/3 to four decimal places is

Answer»

The value of (127)1/3 to four decimal places is


33.

Minimize Z = x + 2y, subject to constraints are 2x + y ≥ 3, x + 2y ≥ 6 and x, y ≥ 0. Show that the minimum of Z occurs at more than two points.

Answer»

Minimize Z = x + 2y, subject to constraints are 2x + y 3, x + 2y 6 and x, y 0. Show that the minimum of Z occurs at more than two points.

34.

The odds against a certain event is 5 : 2 and the odds in favour of another event is 6 : 5. If both the events are independent, then the probability that at least one of the events will happen is

Answer»

The odds against a certain event is 5 : 2 and the odds in favour of another event is 6 : 5. If both the events are independent, then the probability that at least one of the events will happen is


35.

Let z1 satisfy the condition |z−3|=2 and z2 satisfy the equation |z−1|+|z+1|=3. If |z1−z2|min=m and |z1−z2|max=M, then which of the following is/are correct?

Answer»

Let z1 satisfy the condition |z3|=2 and z2 satisfy the equation |z1|+|z+1|=3. If |z1z2|min=m and |z1z2|max=M, then which of the following is/are correct?

36.

The vectors →x and →y satisfy the equation p→x+q→y=→a (where p, q are scalar constants and →a is a known vector). It is given that →x.→y≥|→a|24pq, then |→x||→y| is equal to (pq&gt;0)

Answer»

The vectors x and y satisfy the equation px+qy=a (where p, q are scalar constants and a is a known vector). It is given that x.y|a|24pq, then |x||y| is equal to (pq>0)

37.

Foot of the perpendicular drawn from the point (1,3,4) to the plane 2x–y+z+3=0 is

Answer»

Foot of the perpendicular drawn from the point (1,3,4) to the plane 2xy+z+3=0 is

38.

If a, b, c are in AP, prove that (a−c)2=4(b2−ac).

Answer»

If a, b, c are in AP, prove that (ac)2=4(b2ac).

39.

If log10 2,log10(2x−1)and log10(2x+3) be three consecutive term of an AP, then

Answer» If log10 2,log10(2x1)and log10(2x+3) be three consecutive term of an AP, then
40.

Prove that: sin2π18+sin2π9+sin27π18+sin24π9=2

Answer»

Prove that: sin2π18+sin2π9+sin27π18+sin24π9=2

41.

If α,β are different values of x satisfying a cos x + b sin x = c then tan(α+β2)=

Answer»

If α,β are different values of x satisfying a cos x + b sin x = c then tan(α+β2)=

42.

Mark the correct alternative in each of the following : In any ΔABC, the value of 2ac sin(A−B+C2) is

Answer»

Mark the correct alternative in each of the following :

In any ΔABC, the value of 2ac sin(AB+C2) is


43.

Let f:R+→R, where R+ is the set of all positive real numbers, be such that f(x)=logex, Determine i) The image set of the domain of f ii) {x:f(x)=−2} iii) Whether f(xy)=f(x)+f(y) holds.

Answer»

Let f:R+R, where R+ is the set of all positive real numbers, be such that f(x)=logex, Determine
i) The image set of the domain of f
ii) {x:f(x)=2}
iii) Whether f(xy)=f(x)+f(y) holds.

44.

For all complex numbers z1, z2 satisfying |z1|=12 and |z2−3−4i|=5, the minimum value of |z1−z2| is

Answer»

For all complex numbers z1, z2 satisfying |z1|=12 and |z234i|=5, the minimum value of |z1z2| is


45.

If sinθ=35,tanθ=12andπ2&lt;θ&lt;π&lt;=3π2, find the value of 8 tanθ−√5secϕ.

Answer»

If sinθ=35,tanθ=12andπ2<θ<π<=3π2, find the value of 8 tanθ5secϕ.

46.

Find the points on z-axis which are at a distance √21 from the point (1, 2, 3)

Answer»

Find the points on z-axis which are at a distance 21 from the point (1, 2, 3)

47.

A man is known to speak truth 3 out of 4 times. He throws a dice and reports that it is a six. The probability that it is actually a six is:

Answer»

A man is known to speak truth 3 out of 4 times. He throws a dice and reports that it is a six. The probability that it is actually a six is:

48.

Evaluate: (i) √−25×√−49 (ii) √−36×√16

Answer» Evaluate:
(i) 25×49
(ii) 36×16
49.

If a rectangular field of an area 100 square units is divided into two parts of area 36 square units and 64 square units along the length such that the length of the original field and both the newly created fields are coprime to each other, then the sum of the length of original field and both the newly created fields is

Answer» If a rectangular field of an area 100 square units is divided into two parts of area 36 square units and 64 square units along the length such that the length of the original field and both the newly created fields are coprime to each other, then the sum of the length of original field and both the newly created fields is
50.

If α,β are the roots of the equation x2+4x+p=0 where p=n∑r=0 nCr1+rt(1+nt)r⋅(−1)r, then |α−β| is

Answer» If α,β are the roots of the equation x2+4x+p=0 where p=nr=0 nCr1+rt(1+nt)r(1)r, then |αβ| is