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. |
Solve the following equations for x:(i) tan−12x + tan−13x = nπ + 3π4(ii) tan−1(x + 1) + tan−1(x − 1) = tan−1831(iii) tan−1(x −1) + tan−1x tan−1(x + 1) = tan−13x(iv) tan−11-x1+x-12tan−1x = 0, where x > 0(v) cot−1x − cot−1(x + 2) = π12, x > 0(vi) tan−1(x + 2) + tan−1(x − 2) = tan−1879, x > 0(vii) tan-1x2+tan-1x3=π4, 0<x<6(viii) tan-1x-2x-4+tan-1x+2x+4=π4(ix) tan-12+x+tan-12-x=tan-123, where x<-3 or, x>3(x) tan-1x-2x-1+tan-1x+2x+1=π4 |
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Answer» Solve the following equations for x: (i) tan−12x + tan−13x = nπ + (ii) tan−1(x + 1) + tan−1(x − 1) = tan−1 (iii) tan−1(x −1) + tan−1x tan−1(x + 1) = tan−13x (iv) tan−1tan−1x = 0, where x > 0 (v) cot−1x − cot−1(x + 2) = , x > 0 (vi) tan−1(x + 2) + tan−1(x − 2) = tan−1, x > 0 (vii) (viii) (ix) (x) |
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| 2. |
The distance of the point A from the origin is |
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Answer» The distance of the point A from the origin is |
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| 3. |
Pick the graph(s) which corresponds to a function. |
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Answer» Pick the graph(s) which corresponds to a function. |
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| 4. |
If A=α22α and |A3| = 125, then α = ___________. |
| Answer» If and |A3| = 125, then α = ___________. | |
| 5. |
If A is the solution set of the equation logx2⋅log2x2=log4x2 and B is the solution set of the equation xlogx(3−x)2=25, then n(A∪B) is equal to |
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Answer» If A is the solution set of the equation logx2⋅log2x2=log4x2 and B is the solution set of the equation xlogx(3−x)2=25, then n(A∪B) is equal to |
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| 6. |
Find the rate of change of the area of a circle with respect to its radius r when(a) r=3 cm (b) r=4 cm |
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Answer» Find the rate of change of the area of a circle with respect to its radius r when (a) r=3 cm (b) r=4 cm |
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| 7. |
311 cos cos 211 + cot cot (211 + X) = |
| Answer» 311 cos cos 211 + cot cot (211 + X) = | |
| 8. |
Zeros of p (x) = X2-2x-3 |
| Answer» Zeros of p (x) = X2-2x-3 | |
| 9. |
If y = √x+√y+√x+√y+...∞ , then dydx is equal to |
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Answer» If y = √x+√y+√x+√y+...∞ , then dydx is equal to |
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| 10. |
Which of the following options is equal to sin θ+1−cos θcos θ−1+sin θ? |
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Answer» Which of the following options is equal to sin θ+1−cos θcos θ−1+sin θ? |
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| 11. |
sin"(sin2兀16, |
| Answer» sin"(sin2兀16, | |
| 12. |
The foci of the hyperbola9x2−16y2=144 are |
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Answer» The foci of the hyperbola9x2−16y2=144 are |
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| 13. |
15. The sum of n terms of two AP are in the ratio (5n+4):(9n+6). Find the ratio of their eighteenth term. |
| Answer» 15. The sum of n terms of two AP are in the ratio (5n+4):(9n+6). Find the ratio of their eighteenth term. | |
| 14. |
If p(y)=2y3−6y2−5y+7 then find p(2). |
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Answer» If p(y)=2y3−6y2−5y+7 then find p(2). |
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| 15. |
f(x)=sgn(x), g(x)=x(x2−1) and ϕ(x)=(x2−1)sinx, then which of the following is/are periodic function |
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Answer» f(x)=sgn(x), g(x)=x(x2−1) and ϕ(x)=(x2−1)sinx, then which of the following is/are periodic function |
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| 16. |
The value of 6∑k=1(sin2kπ7−cos2kπ7) is |
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Answer» The value of 6∑k=1(sin2kπ7−cos2kπ7) is |
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| 17. |
List IList II(A)If∫(x2+cos2x1+x2)cosec2x dx=mcot−1x +n cosec xsecx,then(P)m=1(B)If∫√x+√x2+2 dx=m3(x+√x2+2)3/2(Q)n=−1 −n√x+√x2+2,then(C)If∫xtan−1x(1+x2)3/2dx=mx√1+x2(R)n=2 +ntan−1x√1+x2,then(D)If∫sin2xsin4x+cos4xdx=ncot−1(tan2x) +msin2x,then(S)m=−1(T)m=0(U)n=1Which of the following is the only CORRECT combination? |
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Answer» List IList II(A)If∫(x2+cos2x1+x2)cosec2x dx=mcot−1x +n cosec xsecx,then(P)m=1(B)If∫√x+√x2+2 dx=m3(x+√x2+2)3/2(Q)n=−1 −n√x+√x2+2,then(C)If∫xtan−1x(1+x2)3/2dx=mx√1+x2(R)n=2 +ntan−1x√1+x2,then(D)If∫sin2xsin4x+cos4xdx=ncot−1(tan2x) +msin2x,then(S)m=−1(T)m=0(U)n=1 Which of the following is the only CORRECT combination? |
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| 18. |
The latus rectum of a parabola whose focal chord is PSQ such that SP=3 and SQ=2 is ? |
| Answer» The latus rectum of a parabola whose focal chord is PSQ such that SP=3 and SQ=2 is ? | |
| 19. |
For three events A,B and C, P(Exactly one of A or B occurs)=P(Exactly one of B or C occurs)=P(Exactly one of C or A occurs)=14 and P(All the three events occur simultaneously)=116. Then the probability that at least one of the events occurs, is |
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Answer» For three events A,B and C, P(Exactly one of A or B occurs)=P(Exactly one of B or C occurs)=P(Exactly one of C or A occurs)=14 and P(All the three events occur simultaneously)=116. Then the probability that at least one of the events occurs, is |
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| 20. |
How to represent \sqrt{3.6 } on a number lin |
| Answer» How to represent \sqrt{3.6 } on a number lin | |
| 21. |
If xcosθ=ycosθ-2π3=zcosθ+2π3, then x + y + z = ____________. |
| Answer» If then x + y + z = ____________. | |
| 22. |
[(A′∪B′)−A]′=___ |
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Answer» [(A′∪B′)−A]′= |
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| 23. |
The value of 30C030C10 - 30C130C11 + 30C230C12 - .......... + 30C2030C30 is |
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Answer» The value of 30C030C10 - 30C130C11 + 30C230C12 - .......... + 30C2030C30 is |
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| 24. |
The derivative of ln(secθ+tanθ) with respect to secθ at θ=π4 is |
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Answer» The derivative of ln(secθ+tanθ) with respect to secθ at θ=π4 is |
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| 25. |
Angle of intersection of the curves 4x2+9y2=72 and x2−y2=5 at (3, 2) is equal to |
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Answer» Angle of intersection of the curves 4x2+9y2=72 and x2−y2=5 at (3, 2) is equal to |
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| 26. |
Two numbers b and c are chosen at random (with replacement from the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9). The probability that x2+bx+c>0 for all x∈R is |
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Answer» Two numbers b and c are chosen at random (with replacement from the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9). The probability that x2+bx+c>0 for all x∈R is |
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| 27. |
The general solution(s) of the equation cosθ+cos7θ=0 can be (n∈Z) |
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Answer» The general solution(s) of the equation cosθ+cos7θ=0 can be (n∈Z) |
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| 28. |
The equation of the curve which passes through the point (1, 1) and whose slope is given by 2yx, is |
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Answer» The equation of the curve which passes through the point (1, 1) and whose slope is given by 2yx, is |
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| 29. |
Let f be a real valued function defined as f(x)=x2+x21∫−1t⋅f(t) dt+x31∫−1f(t) dt. Then which of the following hold(s) good ? |
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Answer» Let f be a real valued function defined as f(x)=x2+x21∫−1t⋅f(t) dt+x31∫−1f(t) dt. Then which of the following hold(s) good ? |
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| 30. |
In a triangle ABC,a3cos(B−C)+b3cos(C−A)+c3cos(A−B)= |
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Answer» In a triangle ABC,a3cos(B−C)+b3cos(C−A)+c3cos(A−B)= |
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| 31. |
The eccentricity of the hyperbola whose length of conjugate axis is equal to half of the distance between its foci is e, then 3e2= |
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Answer» The eccentricity of the hyperbola whose length of conjugate axis is equal to half of the distance between its foci is e, then 3e2= |
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| 32. |
If n∑r=0f(r)=A and ∣∣∣∣∣2rb2(2n−1)ac2(n+1)a3rx3n−1∣∣∣∣∣=f(r)where (a,b,c,x are rational numbers). Then the value of A is |
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Answer» If n∑r=0f(r)=A and ∣∣ ∣ ∣∣2rb2(2n−1)ac2(n+1)a3rx3n−1∣∣ ∣ ∣∣=f(r) where (a,b,c,x are rational numbers). Then the value of A is |
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| 33. |
72.The general solution of sinx+3sin2x+sin3x=cosx+3cos2x+cos3x , 0 |
| Answer» 72.The general solution of sinx+3sin2x+sin3x=cosx+3cos2x+cos3x , 0 | |
| 34. |
Prove that (sin7x+sin5x)+(sin9x+sin3x)(cos7x+cos5x)+(cos9x+cos3x)=tan6x |
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Answer» Prove that (sin7x+sin5x)+(sin9x+sin3x)(cos7x+cos5x)+(cos9x+cos3x)=tan6x |
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| 35. |
63. What is Dulong and Petit's law it's uses and function |
| Answer» 63. What is Dulong and Petit's law it's uses and function | |
| 36. |
Find the equation of the line which intersects the lines x+21=y−32=z+14 and x−12=y−23=z−34 and passes through the point (1, 1, 1). |
| Answer» Find the equation of the line which intersects the lines x+21=y−32=z+14 and x−12=y−23=z−34 and passes through the point (1, 1, 1). | |
| 37. |
68.Prove that Tan50+sec50=tan70 |
| Answer» 68.Prove that Tan50+sec50=tan70 | |
| 38. |
what is the significance of superposition principle |
| Answer» what is the significance of superposition principle | |
| 39. |
If 20Cr=20Cr−10, then 18Cr is equal to |
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Answer» If 20Cr=20Cr−10, then 18Cr is equal to |
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| 40. |
if f:N→N is defined by f(n)=n−(−1)n, then |
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Answer» if f:N→N is defined by f(n)=n−(−1)n, then |
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| 41. |
Paragraph for below questionनीचे दिए गए प्रश्न के लिए अनुच्छेदIf f(x) is a function, then antiderivative of f(x) is represented as ∫f(x)dxGiven ∫ex(f(x)+f′(x))dx=exf(x)+c and ∫(f(x)+x⋅f′(x))dx=x⋅f(x)+cChoose the correct answer.यदि f(x) एक फलन है, तब f(x) के प्रतिअवकलज को ∫f(x)dx रूप में प्रदर्शित किया गया है।दिया है ∫ex(f(x)+f′(x))dx=exf(x)+c तथा ∫(f(x)+x⋅f′(x))dx=x⋅f(x)+cसही उत्तर का चयन कीजिए।Q. ∫ex⋅(sinx+tanx+1secx+1cos2x)dx is equal toप्रश्न - ∫ex⋅(sinx+tanx+1secx+1cos2x)dx का मान है |
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Answer» Paragraph for below question |
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| 42. |
13,(1+ex ) (2 +の |
| Answer» 13,(1+ex ) (2 +の | |
| 43. |
If x+√x+2x−√x+2≥1, then |
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Answer» If x+√x+2x−√x+2≥1, then |
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| 44. |
If x=3, y=ω+2ω2 and z=ω2+2ω, then xyz is equal to |
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Answer» If x=3, y=ω+2ω2 and z=ω2+2ω, then xyz is equal to |
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| 45. |
If the function f defined as f(x)=1x−k−1e2x−1,x≠0, is continuous at x=0,then the ordered pair (k,f(0)) is equal to: |
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Answer» If the function f defined as f(x)=1x−k−1e2x−1,x≠0, is continuous at x=0,then the ordered pair (k,f(0)) is equal to: |
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| 46. |
The coefficient of x9 in the expansion of (1+x)(1+x2)(1+x3)…….(1+x100) is . |
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Answer» The coefficient of x9 in the expansion of (1+x)(1+x2)(1+x3)…….(1+x100) is |
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| 47. |
The number of possible matrices of order 3 × 3 with each entry 2 or 0 is(a) 9(b) 27(c) 81(d) none of these |
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Answer» The number of possible matrices of order 3 × 3 with each entry 2 or 0 is (a) 9 (b) 27 (c) 81 (d) none of these |
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| 48. |
2. A tea party is arranged for 18 people along two sides of 9 chairs along each side.4 men wish to sit on a particular side & 3 on the other side .in how many ways they can be seated? |
| Answer» 2. A tea party is arranged for 18 people along two sides of 9 chairs along each side.4 men wish to sit on a particular side & 3 on the other side .in how many ways they can be seated? | |
| 49. |
If for x≠0, y≠0, then D is |
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Answer» If |
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| 50. |
72. Simplify (3+3)(2+2) |
| Answer» 72. Simplify (3+3)(2+2) | |