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 positive integral value of n such that 1⋅21+2⋅22+3⋅23+4⋅24+…+n⋅2n=2+2n+5, is |
|
Answer» The positive integral value of n such that 1⋅21+2⋅22+3⋅23+4⋅24+…+n⋅2n=2+2n+5, is |
|
| 2. |
Solve cos2 A1−tan A+sin3Asin A−cos A=1+sin A cos A |
|
Answer» Solve cos2 A1−tan A+sin3Asin A−cos A=1+sin A cos A |
|
| 3. |
The graph of f(x)=||x−1|−1| is |
|
Answer» The graph of f(x)=||x−1|−1| is |
|
| 4. |
Let PQ be a focal chord of the parabola y2=4ax. The tangents to the parabola at P and Q meet at a point lying on the line y=2x+a,a>0. If chord PQ subtends an angle θ at the vertex of y2=4ax, then tan θ is equal to |
|
Answer» Let PQ be a focal chord of the parabola y2=4ax. The tangents to the parabola at P and Q meet at a point lying on the line y=2x+a,a>0. |
|
| 5. |
In a △ABC , if tanAtanB=3, then the value of cosCcosAcosB is |
|
Answer» In a △ABC , if tanAtanB=3, then the value of cosCcosAcosB is |
|
| 6. |
The integrating factor for the differential equation dydx(x+2y3)=y is |
|
Answer» The integrating factor for the differential equation dydx(x+2y3)=y is |
|
| 7. |
Which of the following function(s) has/have point of inflection? |
|
Answer» Which of the following function(s) has/have point of inflection? |
|
| 8. |
limx → 0sin(x2)ln(cos(2x2−x)) is equal to |
|
Answer» limx → 0sin(x2)ln(cos(2x2−x)) is equal to |
|
| 9. |
Let A=Q×Q and let ∗ be a binary operation on A defined by (a,b)∗(c,d)=(ac,b+ad) for (a,b)(c,d)ϵA. Determine, whether ∗ is commutative and associative. Then, with respect to ∗ on A (i) Find the identity element in A (ii) Find the invertible elements of A. |
|
Answer» Let A=Q×Q and let ∗ be a binary operation on A defined by (a,b)∗(c,d)=(ac,b+ad) for (a,b)(c,d)ϵA. Determine, whether ∗ is commutative and associative. Then, with respect to ∗ on A (i) Find the identity element in A (ii) Find the invertible elements of A. |
|
| 10. |
If a,b,c are the sides opposite to angles A,B,C of a triangle ABC, respectively and ∠A=π3, b:c=√3+1:2, then the value of ∠B−∠C is |
|
Answer» If a,b,c are the sides opposite to angles A,B,C of a triangle ABC, respectively and ∠A=π3, b:c=√3+1:2, then the value of ∠B−∠C is |
|
| 11. |
If the normal at the point P(ap2,2ap) meets the parabola at Q(aq2,2aq) such that the lines joining the origin to P and Q are at right angle, then |
|
Answer» If the normal at the point P(ap2,2ap) meets the parabola at Q(aq2,2aq) such that the lines joining the origin to P and Q are at right angle, then |
|
| 12. |
Find the value of x, if Given, ∣∣∣2345∣∣∣=∣∣∣x32x5∣∣∣ |
|
Answer» Find the value of x, if Given, ∣∣∣2345∣∣∣=∣∣∣x32x5∣∣∣ |
|
| 13. |
∫20ex dx |
|
Answer» ∫20ex dx |
|
| 14. |
The point on x-axis equidistant from (5, 4) and (–2, 3) is ____ . |
|
Answer» The point on x-axis equidistant from (5, 4) and (–2, 3) is ____ . |
|
| 15. |
What is the Degree of differential equation ? log (dy/dx) + x sin x =x |
|
Answer» What is the Degree of differential equation ? log (dy/dx) + x sin x =x |
|
| 16. |
tan−1{√1+x2+1x} |
|
Answer» tan−1{√1+x2+1x} |
|
| 17. |
IF A IS A SQUARE MATRIX SUCH THAT [A]=3THEN FIND THE VALUE OF [ A,A^T] |
| Answer» IF A IS A SQUARE MATRIX SUCH THAT [A]=3THEN FIND THE VALUE OF [ A,A^T] | |
| 18. |
If tan70∘=tan20∘+2tanA∘,then the value of A is (in degree) |
|
Answer» If tan70∘=tan20∘+2tanA∘,then the value of A is (in degree) |
|
| 19. |
The sum of the digit in the unit’s place of four digit numbers formed using digits 3,4,5,6 taken all at a time is |
|
Answer» The sum of the digit in the unit’s place of four digit numbers formed using digits 3,4,5,6 taken all at a time is |
|
| 20. |
If x=cos3θ,y=sin3θ then √1+(dydx)2= |
|
Answer» If x=cos3θ,y=sin3θ then √1+(dydx)2= |
|
| 21. |
The locus of the centre of the circle which cuts x2+y2−20x+4=0 orthogonally and touches the line x=2, is |
|
Answer» The locus of the centre of the circle which cuts x2+y2−20x+4=0 orthogonally and touches the line x=2, is |
|
| 22. |
The value of 2cot−112−cot−143 is |
|
Answer» The value of 2cot−112−cot−143 is |
|
| 23. |
If α,β,γ are the roots of equation x3−6x2+11x−6=0, then find the equation whose roots are α2+β2,β2+γ2,γ2+α2 is |
|
Answer» If α,β,γ are the roots of equation x3−6x2+11x−6=0, then find the equation whose roots are α2+β2,β2+γ2,γ2+α2 is |
|
| 24. |
If x−y=13 and cos2(πx)−sin2(πy)=12, then (x,y) can be |
|
Answer» If x−y=13 and cos2(πx)−sin2(πy)=12, then (x,y) can be |
|
| 25. |
Perpendicular distance of the point (3, 4, 5) from the y-axis, is [MP PET 1994, Pb. CET 2002] |
|
Answer» Perpendicular distance of the point (3, 4, 5) from the y-axis, is [MP PET 1994, Pb. CET 2002] |
|
| 26. |
Determine whether the given planes are parallel or perpendicular and in case they are neither, find the angle between them. 2x+y+3z-2=0 and x-2y+5=0 |
|
Answer» Determine whether the given planes are parallel or perpendicular and in case they are neither, find the angle between them. 2x+y+3z-2=0 and x-2y+5=0 |
|
| 27. |
Which one of the following hold good? |
|
Answer» Which one of the following hold good? |
|
| 28. |
The number of diagonals that can be drawn in a hexagon is |
|
Answer» The number of diagonals that can be drawn in a hexagon is |
|
| 29. |
The coefficient of variance is 60 and standard deviation is 24, then Arithmatic mean is |
|
Answer» The coefficient of variance is 60 and standard deviation is 24, then Arithmatic mean is |
|
| 30. |
The value of sin2π4+sin23π4+sin25π4+sin27π4 is |
|
Answer» The value of sin2π4+sin23π4+sin25π4+sin27π4 is |
|
| 31. |
If the points (0, 1, 2), (2, –1, 3) and (1, –3, 1) are the vertices of a triangle, then the triangle is |
|
Answer» If the points (0, 1, 2), (2, –1, 3) and (1, –3, 1) are the vertices of a triangle, then the triangle is |
|
| 32. |
Find the integrals of the functions. ∫tan32x sec2xdx. |
|
Answer» Find the integrals of the functions. |
|
| 33. |
If √(1−x2n)+√(1−y2n)=a(xn−yn), then √(1−x2n1−y2n)dydx is equal to |
|
Answer» If √(1−x2n)+√(1−y2n)=a(xn−yn), then √(1−x2n1−y2n)dydx is equal to |
|
| 34. |
Statement 1 : If two lines are perpendicular, then product of their slopes is –1. Statement 2: If the product of slopes of two lines is –1, then these lines will be perpendicular. |
|
Answer» Statement 1 : If two lines are perpendicular, then product of their slopes is –1. |
|
| 35. |
What is the difference between locus and equation? |
|
Answer» What is the difference between locus and equation? |
|
| 36. |
In a traingle ABC ,2a2+4b2+c2=4ab+2ac, then numerical value of cosB is equal to |
|
Answer» In a traingle ABC ,2a2+4b2+c2=4ab+2ac, then numerical value of cosB is equal to |
|
| 37. |
Find the equations of the tangent and normal to the parabola y2=4 ax at the point (at2,2at). |
|
Answer» Find the equations of the tangent and normal to the parabola y2=4 ax at the point (at2,2at). |
|
| 38. |
The number of 5 digit numbers can be made from the digits 0,1,2,3,4,5 if repetition is not allowed is ___ |
|
Answer» The number of 5 digit numbers can be made from the digits 0,1,2,3,4,5 if repetition is not allowed is |
|
| 39. |
The value of π2∫−π2x2cosx1+exdx is equal to |
|
Answer» The value of π2∫−π2x2cosx1+exdx is equal to |
|
| 40. |
Arguments of Z = (2+i)[4i+(1+i)2] is : |
|
Answer» Arguments of Z = (2+i)[4i+(1+i)2] is : |
|
| 41. |
If a, b, c are the roots of x3 - x2 - 2004 = 0. Then the value of is equal to |
|
Answer» If a, b, c are the roots of x3 - x2 - 2004 = 0. Then the value of is |
|
| 42. |
A coin is tossed 7 times. Then the probability that at least 4 consecutive heads appear is |
|
Answer» A coin is tossed 7 times. Then the probability that at least 4 consecutive heads appear is |
|
| 43. |
Two squares are chosen at random on a chessboard. The probability that they have a side in common is |
|
Answer» Two squares are chosen at random on a chessboard. The probability that they have a side in common is |
|
| 44. |
Let f(n) be the number of regions in which n coplanar circles can divide the plane. If it is known that each pair of circles intersect at two different points and no three of them have common point of intersection, then |
|
Answer» Let f(n) be the number of regions in which n coplanar circles can divide the plane. If it is known that each pair of circles intersect at two different points and no three of them have common point of intersection, then |
|
| 45. |
Given standard equation of ellipse, x2a2+y2b2=1,a>b, with eccentricity e Match the following a) Focusi)(ae,0)b) Directrixii)(a,0)c) Eccentricityiii)x=aed) Verticesiv)(−ae,0)v)x=−aevi)√1−b2a2 |
|
Answer» Given standard equation of ellipse,
|
|
| 46. |
The number of different words that can be formed using all the letters of the word 'APPLICATION' such that two vowels never come together, is |
|
Answer» The number of different words that can be formed using all the letters of the word 'APPLICATION' such that two vowels never come together, is |
|
| 47. |
The magnitude of −√4 is |
|
Answer» The magnitude of −√4 is |
|
| 48. |
The number of divisors of 9600 including 1 and 9600 are |
|
Answer» The number of divisors of 9600 including 1 and 9600 are
|
|
| 49. |
The integer ′k′, for which the inequality x2–2(3k–1)x+8k2–7>0 is valid for every x in R is : |
|
Answer» The integer |
|
| 50. |
Solve the differential equation : (x+1)dydx=2e−y−1; y(0)=0. |
|
Answer» Solve the differential equation : (x+1)dydx=2e−y−1; y(0)=0. |
|