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. |
A fair die is rolled. consider events E = {1, 3,5} F = {2,3} and G = {2,3,4,5}. Find P(EF) and P(FE) P(EG) and P(GE) P(E∪FG) and P(E∩FG) |
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Answer» A fair die is rolled. consider events E = {1, 3,5} F = {2,3} and G = {2,3,4,5}. Find P(EG) and P(GE) P(E∪FG) and P(E∩FG) |
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| 2. |
Let f: Q → Q be a function given by f(x) = x2,then f -1(9) = |
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Answer» Let f: Q → Q be a function given by f(x) = x2,then f -1(9) = |
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| 3. |
what is methodologies? |
| Answer» what is methodologies? | |
| 4. |
If a class consists of 6 periods, then the number of ways in which 5 subjects can be taught such that each subject must be allotted at least one period and no period remains vacant is |
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Answer» If a class consists of 6 periods, then the number of ways in which 5 subjects can be taught such that each subject must be allotted at least one period and no period remains vacant is |
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| 5. |
Choose thecorrect answer.Let Abe a square matrix of order 3 ×3, then isequal toA. B. C. D. |
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Answer» Choose the Let A A. |
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| 6. |
34. The expression " cos3x + sin3x +(2sin2x-3)(sinx- cosx)", is positive for all x in the range? |
| Answer» 34. The expression " cos3x + sin3x +(2sin2x-3)(sinx- cosx)", is positive for all x in the range? | |
| 7. |
Find the particular solution of differential equation : dydx=−x+y cos x1+sin x, given that y=1 when x=0. |
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Answer» Find the particular solution of differential equation : dydx=−x+y cos x1+sin x, given that y=1 when x=0. |
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| 8. |
The integral ∫2x3−1x4+x dx is equal to : (Here C is a constant of integration) |
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Answer» The integral ∫2x3−1x4+x dx is equal to : (Here C is a constant of integration) |
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| 9. |
ntLet A be the set of all quadrilaterals in a plane and R+ be the set of positive real numbers. Prove that the function f:A→R+ defined by f(x) = area of quadrilateral x, is many-one and onto.n |
| Answer» ntLet A be the set of all quadrilaterals in a plane and R+ be the set of positive real numbers. Prove that the function f:A→R+ defined by f(x) = area of quadrilateral x, is many-one and onto.n | |
| 10. |
The range of intergers that can be represented by n bit 2's complement number system is |
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Answer» The range of intergers that can be represented by n bit 2's complement number system is |
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| 11. |
The matrix A = ⎡⎢⎢⎢⎣320120−1012032⎤⎥⎥⎥⎦ has three distinct eigen values and one of its eigen vectors is ⎡⎢⎣101⎤⎥⎦which one of the following can be anooter eigen vector of A? |
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Answer» The matrix A = ⎡⎢ |
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| 12. |
`tan^(-1)1+sin^(-1)(2)/(sqrt(5))+tan^(-1)3` is equal to |
| Answer» `tan^(-1)1+sin^(-1)(2)/(sqrt(5))+tan^(-1)3` is equal to | |
| 13. |
The two equal sides of an isosceles triangle with fixed base b are decreasing at the rate of 3 cm per second. How fast is the area decreasing when the two equal sides are equal to the base? |
| Answer» The two equal sides of an isosceles triangle with fixed base b are decreasing at the rate of 3 cm per second. How fast is the area decreasing when the two equal sides are equal to the base? | |
| 14. |
Evaluate limx→9√x= |
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Answer» Evaluate limx→9√x= |
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| 15. |
Prove that sinx−sin3xsin2x−cos2x=2sinx |
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Answer» Prove that sinx−sin3xsin2x−cos2x=2sinx |
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| 16. |
How draw root 5 on number line |
| Answer» How draw root 5 on number line | |
| 17. |
Consider a vector F=4i-3j.Another vector perpendicula of F is a.4i+3j b.6j c.7k d.3i-4j |
| Answer» Consider a vector F=4i-3j.Another vector perpendicula of F is a.4i+3j b.6j c.7k d.3i-4j | |
| 18. |
If f ( x ) = x 2 , find . |
| Answer» If f ( x ) = x 2 , find . | |
| 19. |
Which of the following are sets? Justify our answer. (i) The collection of all months of a year beginning with the letter J. (ii) The collection of ten most talented writers of India. (iii) A team of eleven best-cricket batsmen of the world. (iv) The collection of all boys in your class. (v) The collection of all natural numbers less than 100. (vi) A collection of novels written by the writer Munshi Prem Chand. (vii) The collection of all even integers. (viii) The collection of questions in this Chapter. (ix) A collection of most dangerous animals of the world. |
| Answer» Which of the following are sets? Justify our answer. (i) The collection of all months of a year beginning with the letter J. (ii) The collection of ten most talented writers of India. (iii) A team of eleven best-cricket batsmen of the world. (iv) The collection of all boys in your class. (v) The collection of all natural numbers less than 100. (vi) A collection of novels written by the writer Munshi Prem Chand. (vii) The collection of all even integers. (viii) The collection of questions in this Chapter. (ix) A collection of most dangerous animals of the world. | |
| 20. |
Given quadratic equations x2+5x+p=0 & 2x2+qx+12=0 have both roots common, then p+q= |
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Answer» Given quadratic equations x2+5x+p=0 & 2x2+qx+12=0 have both roots common, then p+q= |
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| 21. |
limx→π4f(x)−f(π4)x−π4, where f(x) = sin 2x |
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Answer» limx→π4f(x)−f(π4)x−π4, where f(x) = sin 2x |
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| 22. |
A car moves with a variable acceleration given by a=tan−1(t) where t is the time in seconds. Find the velocity of the car after 10 seconds, if it was initially at rest |
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Answer» A car moves with a variable acceleration given by a=tan−1(t) where t is the time in seconds. Find the velocity of the car after 10 seconds, if it was initially at rest |
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| 23. |
If f:R→R is given by f(x)=x+1, then the value of limn→∞1n[f(0)+f(5n)+f(10n)+...+f(5(n−1)n)], is: |
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Answer» If f:R→R is given by f(x)=x+1, then the value of limn→∞1n[f(0)+f(5n)+f(10n)+...+f(5(n−1)n)], is: |
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| 24. |
In a three dimensional co - ordinate system P, Q and R are images of a point A(a, b, c) in the xy the yz and the zx planes respectively. If G is the centroid of triangle PQR then area of triangle AOG is (O is the origin) |
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Answer» In a three dimensional co - ordinate system P, Q and R are images of a point A(a, b, c) in the xy the yz and the zx planes respectively. If G is the centroid of triangle PQR then area of triangle AOG is (O is the origin) |
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| 25. |
If Am (A suffix m) denotes m th term of an A.P, then Am is |
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Answer» If Am (A suffix m) denotes m th term of an A.P, then Am is |
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| 26. |
The value of 16π/3∫0|sinx| dx is equal to |
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Answer» The value of 16π/3∫0|sinx| dx is equal to |
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| 27. |
Match the following. Graph of f(x) is given |
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Answer» Match the following. Graph of f(x) is given |
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| 28. |
If tan α, tan β are the roots of the equation x2 + ax + b = 0 then the value of sin2(α+β)+a sin(α+β)cos(α+β)+b cos2(α+β)= |
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Answer» If tan α, tan β are the roots of the equation x2 + ax + b = 0 then the value of sin2(α+β)+a sin(α+β)cos(α+β)+b cos2(α+β)= |
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| 29. |
The value of limn→∞1⋅2+2⋅3+3⋅4+⋯+n(n+1)][1−cos(2/n)]n is |
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Answer» The value of limn→∞1⋅2+2⋅3+3⋅4+⋯+n(n+1)][1−cos(2/n)]n is |
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| 30. |
{ Find the equation of the circle passing through the intersection of the circles }x^2+y^2=4 and }}{x^2+y^2-2x-4y+4=0 and touching the line }x+2y=0 . |
| Answer» { Find the equation of the circle passing through the intersection of the circles }x^2+y^2=4 and }}{x^2+y^2-2x-4y+4=0 and touching the line }x+2y=0 . | |
| 31. |
The conjugate base of HSO−3 is |
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Answer» The conjugate base of HSO−3 is |
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| 32. |
If A and B are two skew-symmetric matrices of same order, then AB is symmetric if ______________. |
| Answer» If A and B are two skew-symmetric matrices of same order, then AB is symmetric if ______________. | |
| 33. |
Find the coordinates of the point which divides the line segment joining the points (–2, 3, 5) and (1, –4, 6) in the ratio (i) 2:3 internally, (ii) 2:3 externally. |
| Answer» Find the coordinates of the point which divides the line segment joining the points (–2, 3, 5) and (1, –4, 6) in the ratio (i) 2:3 internally, (ii) 2:3 externally. | |
| 34. |
Prove that [1/(sec²x-cos²x) + 1/(cosec²x-sin²x)] sin²x cos²x = (1-sin²x cos²x)/(2+sin²x cos²x) |
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Answer» Prove that [1/(sec²x-cos²x) + 1/(cosec²x-sin²x)] sin²x cos²x = (1-sin²x cos²x)/(2+sin²x cos²x) |
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| 35. |
With initial conditions solve for y(t). y′′(t)+5y′(t)+6y(t)=x(t)y(0−)=2,y′(0−)=1 and x(t)=e−tu(t) |
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Answer» With initial conditions solve for y(t). |
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| 36. |
If {x2−x2x,x≠0k,x=0 and if f is continuous at x=0,then k=? |
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Answer» If {x2−x2x,x≠0k,x=0 and if f is continuous at x=0,then k=? |
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| 37. |
If ω is a complex number stisfying ∣∣ω+1ω∣∣=2,then maximum distance of ω from origin is |
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Answer» If ω is a complex number stisfying ∣∣ω+1ω∣∣=2, then maximum distance of ω from origin is |
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| 38. |
If S=[6−8210]=P+Q, where P is a symmetric & Q is a skew -symmetric matrix, then Q is |
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Answer» If S=[6−8210]=P+Q, where P is a symmetric & Q is a skew -symmetric matrix, then Q is |
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| 39. |
Find themaximum value of 2x3 − 24x + 107 inthe interval [1, 3]. Find the maximum value of the same function in[−3, −1]. |
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Answer» Find the |
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| 40. |
The sum of two numbers is 6 times their geometric mean, show that numbers are in the ratio . |
| Answer» The sum of two numbers is 6 times their geometric mean, show that numbers are in the ratio . | |
| 41. |
∫dxx(log x−2)(log x−3)=f(x)+c then f(x)= |
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Answer» ∫dxx(log x−2)(log x−3)=f(x)+c then f(x)= |
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| 42. |
If y=√x+√y+√x+√y+⋯∞, then dydx= |
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Answer» If y=√x+√y+√x+√y+⋯∞, then dydx= |
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| 43. |
34 Prove that cube root 2 is irrational. |
| Answer» 34 Prove that cube root 2 is irrational. | |
| 44. |
The number of terms of G.P. 3,32,34,⋯required to give the sum 3069512 is |
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Answer» The number of terms of G.P. 3,32,34,⋯required to give the sum 3069512 is |
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| 45. |
Taking the set of natural numbers as the universal set, write down the complements of the following sets: (i) {x: x is an even natural number} (ii) {x: x is an odd natural number} (iii) {x: x is a positive multiple of 3} (iv) {x: x is a prime number} (v) {x: x is a natural number divisible by 3 and 5} (vi) {x: x is a perfect square} (vii) {x: x is perfect cube} (viii) {x: x + 5 = 8} (ix) {x: 2x + 5 = 9} (x) {x: x ≥ 7} (xi) {x: x ∈ N and 2x + 1 > 10} |
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Answer» Taking
(i) {x:
(ii) {x:
(iii) {x:
(iv) {x:
(v) {x:
(vi) {x:
(vii) {x:
(viii) {x:
(ix) {x:
(x) {x:
(xi) {x:
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| 46. |
If matrix A=⎡⎢⎣01−14−343−34⎤⎥⎦=B+C, where B is symmetric matrix and C is skew-symmetric matrix.Then the matrices B and C are: |
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Answer» If matrix A=⎡⎢⎣01−14−343−34⎤⎥⎦=B+C, where B is symmetric matrix and C is skew-symmetric matrix. |
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| 47. |
Question 65How many points are marked in the figure? |
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Answer» Question 65 How many points are marked in the figure?
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| 48. |
The Lagrange mean-value theorem is satisifed for f(x)=x3+5x, in the interval [1,4] at a value (round off to the second deciaml place) of x equal to2.645 |
Answer» The Lagrange mean-value theorem is satisifed for f(x)=x3+5x, in the interval [1,4] at a value (round off to the second deciaml place) of x equal to
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| 49. |
Find the equation of circle which touches 2x − y + 3 = 0 and pass through the points of intersection of the line x + 2y − 1 = 0 and the circle x2 + y2 − 2x + 1 = 0 |
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Answer» Find the equation of circle which touches 2x − y + 3 = 0 and pass through the points of intersection of the line x + 2y − 1 = 0 and the circle x2 + y2 − 2x + 1 = 0 |
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| 50. |
An intergrating factor of the equation (1+y+x2y)dx+(x+x3)dy=0 is |
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Answer» An intergrating factor of the equation (1+y+x2y)dx+(x+x3)dy=0 is |
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