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. |
Differentiate the following functions with respect to x : a0xn+a1xn−1+a2xn−2+....+an−1x+an. |
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Answer» Differentiate the following functions with respect to x : a0xn+a1xn−1+a2xn−2+....+an−1x+an. |
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| 2. |
If tan2 45° – cos230° = x sin 45° cos 45° then x = ?(a) 2(b) –2(c) 12(d) -12 |
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Answer» If tan2 45° – cos230° = x sin 45° cos 45° then x = ? (a) 2 (b) –2 (c) (d) |
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| 3. |
If for all real values of x,4x2+164x2−96 x sin α+5<132, then α lies in the interval. |
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Answer» If for all real values of x,4x2+164x2−96 x sin α+5<132, then α lies in the interval. |
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| 4. |
The distance between the plane →r.(^i+5^j+^k)=5 and the line →r=2^i−2^j+3^k+λ(^i−^j+4^k) is |
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Answer» The distance between the plane →r.(^i+5^j+^k)=5 |
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| 5. |
A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment. |
| Answer» A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment. | |
| 6. |
Let two matrices A=⎡⎢⎣12ωω23−152iω⎤⎥⎦ and B=⎡⎢⎣231i2ω⎤⎥⎦, where i2=−1 and ω is a cube root of unity. Then which of the following statement(s) is(are) correct ? |
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Answer» Let two matrices A=⎡⎢⎣12ωω23−152iω⎤⎥⎦ and B=⎡⎢⎣231i2ω⎤⎥⎦, where i2=−1 and ω is a cube root of unity. Then which of the following statement(s) is(are) correct ? |
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| 7. |
If cos(2sin−1x)=19, then x= |
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Answer» If cos(2sin−1x)=19, then x= |
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| 8. |
If a+43b8-6=2a+2b+28a-8b, write the value of a − 2b. |
| Answer» If , write the value of a − 2b. | |
| 9. |
For any two complex numbers z 1 and z 2 , prove that Re (z 1 z 2 ) = Re z 1 Re z 2 – Im z 1 Im z 2 |
| Answer» For any two complex numbers z 1 and z 2 , prove that Re (z 1 z 2 ) = Re z 1 Re z 2 – Im z 1 Im z 2 | |
| 10. |
The number of integral values of k that satisfy the equation 8sinx+3=2k is equal to |
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Answer» The number of integral values of k that satisfy the equation 8sinx+3=2k is equal to |
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| 11. |
36. The straight lines whose direction cosines are given by al+bm+can=0, fmn+gnl+hlm=0 are perpendicular if (1) f/a + g/b + h/c =0 (2) a/f + b/g + c/h =0 (3) af = bg = ch (4) a/f =b/g = c/h |
| Answer» 36. The straight lines whose direction cosines are given by al+bm+can=0, fmn+gnl+hlm=0 are perpendicular if (1) f/a + g/b + h/c =0 (2) a/f + b/g + c/h =0 (3) af = bg = ch (4) a/f =b/g = c/h | |
| 12. |
Sum upto n terms of the series yn=1+(1+x)+(1+x+x2)+(1+x+x2+x3)+⋯+(1+x+x2+⋯+xn) is true for n∈N, then yn is |
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Answer» Sum upto n terms of the series yn=1+(1+x)+(1+x+x2)+(1+x+x2+x3)+⋯+(1+x+x2+⋯+xn) is true for n∈N, then yn is |
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| 13. |
Let f (x) be a function such that f (x) = x - [x], where [x] is the greatest integer less than or equal to x. Then the number of solutions of the equation f(x)+f(1x)=1 is (are) |
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Answer» Let f (x) be a function such that f (x) = x - [x], where [x] is the greatest integer less than or equal to x. Then the number of solutions of the equation f(x)+f(1x)=1 is (are) |
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| 14. |
If f is strictly increasing and positive function, such that xx∫0(1−t)sin(f(t))dt=2x∫0tsin(f(t))dt, where x>0. Then the value of f′(x)cotf(x)+31+x in the domain of f(x) is |
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Answer» If f is strictly increasing and positive function, such that xx∫0(1−t)sin(f(t))dt=2x∫0tsin(f(t))dt, where x>0. Then the value of f′(x)cotf(x)+31+x in the domain of f(x) is |
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| 15. |
Evaluate ∫cosxcos(x−a)dx(where C is constant of integration) |
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Answer» Evaluate ∫cosxcos(x−a)dx |
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| 16. |
The minimum integral value of x for which 2x2+2x+n>9+sin−1(sin(−1))+cos−1(cos(−1)) ∀x∈R, is |
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Answer» The minimum integral value of x for which 2x2+2x+n>9+sin−1(sin(−1))+cos−1(cos(−1)) ∀x∈R, is |
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| 17. |
If 4 numbers are to be selected from 1,2,3,......25 such that they are be in AP, then number of ways of selecting numbers are |
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Answer» If 4 numbers are to be selected from 1,2,3,......25 such that they are be in AP, then number of ways of selecting numbers are |
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| 18. |
The value of ∫(cosxtanx)dx is(where C is constant of integration) |
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Answer» The value of ∫(cosxtanx)dx is |
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| 19. |
Evaluate the following integrals:∫28x-5 dx |
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Answer» Evaluate the following integrals: |
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| 20. |
The domain of the function f(x)=√|1−x|(|x|−1)(4−|x|)|x−2| is |
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Answer» The domain of the function f(x)=√|1−x|(|x|−1)(4−|x|)|x−2| is |
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| 21. |
Determine the domain and range of the relation R defined by (i) R={(x,x+5):xϵ(0,1,2,3,4,5)} (ii) R={(x,x3):x is a prime number less than 10}. |
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Answer» Determine the domain and range of the relation R defined by (i) R={(x,x+5):xϵ(0,1,2,3,4,5)} (ii) R={(x,x3):x is a prime number less than 10}. |
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| 22. |
An alternating current is given by I=i1 cosωt+i2 sinωt. The rms current is given by |
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Answer» An alternating current is given by I=i1 cosωt+i2 sinωt. The rms current is given by |
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| 23. |
Find out the wrong number in the series given below :3,15,34,63,99,143 |
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Answer» Find out the wrong number in the series given below : |
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| 24. |
If f(x) is polynomial of degree 3 with leading coefficient 2 and f(1)=4,f(2)=7,f(3)=12 and f(5)=11α−1, then α= |
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Answer» If f(x) is polynomial of degree 3 with leading coefficient 2 and f(1)=4,f(2)=7,f(3)=12 and f(5)=11α−1, then α= |
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| 25. |
Find the values of x forwhichisan increasing function. |
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Answer» Find the values of x for |
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| 26. |
Let f and g be real functions, defined by f(x)=√x+2 and g(x)=√4−x2. Find (i) (f+g)(x) (ii) (f−g)(x) (iii) (fg)(x) (iv) (ff)(x) (v) (gg)(x) (vi) (fg)(x) |
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Answer» Let f and g be real functions, defined by f(x)=√x+2 and g(x)=√4−x2. Find (i) (f+g)(x) (ii) (f−g)(x) (iii) (fg)(x) (iv) (ff)(x) (v) (gg)(x) (vi) (fg)(x) |
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| 27. |
For a given set X={2,4,6}, tap the bubbles having a subset of X. |
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Answer» For a given set X={2,4,6}, tap the bubbles having a subset of X. |
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| 28. |
If the tangent to y2=4ax at the point (at2,2at) where |t|>1 is a normal to x2−y2=a2 at the point (asecθ,atanθ), then |
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Answer» If the tangent to y2=4ax at the point (at2,2at) where |t|>1 is a normal to x2−y2=a2 at the point (asecθ,atanθ), then |
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| 29. |
If the angle of elevation of a cloud from a point P which is 25 m above a lake be 30∘ and the angle of depression of reflection of the cloud in the lake from P be 60∘, then the height of the cloud (in meters) from the surface of the lake is : |
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Answer» If the angle of elevation of a cloud from a point P which is 25 m above a lake be 30∘ and the angle of depression of reflection of the cloud in the lake from P be 60∘, then the height of the cloud (in meters) from the surface of the lake is : |
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| 30. |
If the asymptotes of the hyperbola (x+y+1)2−(x−y−3)2=5 cuts each other at A and the coordinate axes at B and C, then radius of the circle passing through the points A, B, C is |
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Answer» If the asymptotes of the hyperbola (x+y+1)2−(x−y−3)2=5 cuts each other at A and the coordinate axes at B and C, then radius of the circle passing through the points A, B, C is |
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| 31. |
Find the angle between X-axis and the line joining the points (3, -1) and (4, -2). |
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Answer» Find the angle between X-axis and the line joining the points (3, -1) and (4, -2). |
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| 32. |
what is the value of 1/4πε |
| Answer» what is the value of 1/4πε | |
| 33. |
The conditional (p∧q)⇒p is ___. |
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Answer» The conditional (p∧q)⇒p is |
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| 34. |
Question 110The following data represents the approximate percentage of water in varioous oceans. Prepare a pie chart of the given data.OceanPercentage of waterPacific40%Atlantic30%Indian20%Others10% |
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Answer» Question 110 The following data represents the approximate percentage of water in varioous oceans. Prepare a pie chart of the given data. |
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| 35. |
In a class, for a competition, atleast 3 students are needed. Which of the following graph shows the inequality for this situation? |
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Answer» In a class, for a competition, atleast 3 students are needed. Which of the following graph shows the inequality for this situation? |
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| 36. |
If xsin(yx)dy=[ysin(yx)−x]dx,x>0 and y(1)=π2 then the value of cos(yx) is |
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Answer» If xsin(yx)dy=[ysin(yx)−x]dx,x>0 and y(1)=π2 then the value of cos(yx) is |
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| 37. |
Mark the correct alternative in the following question:A number is as much greater than 31 as it is less than 81. The number is(a) 46 (b) 56 (c) 66 (d) 76 |
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Answer» Mark the correct alternative in the following question: A number is as much greater than 31 as it is less than 81. The number is (a) 46 (b) 56 (c) 66 (d) 76 |
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| 38. |
If z=x+iy and Re(z2)=0, then the locus of z can be |
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Answer» If z=x+iy and Re(z2)=0, then the locus of z can be |
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| 39. |
If the minimum area of the triangle formed by a tangent to the ellipse x2b2+y24a2=1 and the coordinate axis is kab, then k is equal to |
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Answer» If the minimum area of the triangle formed by a tangent to the ellipse x2b2+y24a2=1 and the coordinate axis is kab, then k is equal to |
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| 40. |
ax+by-c=0, bx+ay=1+c find value of x and |
| Answer» ax+by-c=0, bx+ay=1+c find value of x and | |
| 41. |
For certain values of a,m and b, the functionf(x)=⎧⎨⎩3,x=0−x2+3x+a,0<x<1mx+b,1≤x≤2 satisfies the hypothesis of the mean value theorem for the interval [0,2]. Then the value of a+b+m is |
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Answer» For certain values of a,m and b, the function |
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| 42. |
The set of values of x which satisfy the inequality cos−1(4xf(x)π)≤π3; where f(x)=(sin−1x)2+πcos−1x−(cos−1x)2 is |
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Answer» The set of values of x which satisfy the inequality cos−1(4xf(x)π)≤π3; where f(x)=(sin−1x)2+πcos−1x−(cos−1x)2 is |
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| 43. |
Show that the function defined by is discontinuous at all integral point. Here denotes the greatest integer less than or equal to x . |
| Answer» Show that the function defined by is discontinuous at all integral point. Here denotes the greatest integer less than or equal to x . | |
| 44. |
The number of ways in which the letters of the word TRIANGLE can be arranged such that two vowels do not occur together is |
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Answer» The number of ways in which the letters of the word TRIANGLE can be arranged such that two vowels do not occur together is |
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| 45. |
Let f:R→R be a function such that f(2)=4 and f′(2)=1. Then, the value of limx→2x2f(2)−4f(x)x−2 is equal to |
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Answer» Let f:R→R be a function such that f(2)=4 and f′(2)=1. Then, the value of limx→2x2f(2)−4f(x)x−2 is equal to |
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| 46. |
If line x+1λ=y-11=z+2-4 is perpendicular to the plane 2x+2y-8z+5=0. Then the value of λ is _____________. |
| Answer» If line is perpendicular to the plane . Then the value of λ is _____________. | |
| 47. |
If distance between coordinates (p,4) and (-3,5) is 56, then find the the value of p. |
| Answer» If distance between coordinates (p,4) and (-3,5) is 56, then find the the value of p. | |
| 48. |
In a GP, first term is a and the common ratio is r. If A and H are the arithmetic means and harmonic means respectively for the first n terms of GP. Them A * H is equal to |
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Answer» In a GP, first term is a and the common ratio is r. If A and H are the arithmetic means and harmonic means respectively for the first n terms of GP. Them A * H is equal to |
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| 49. |
Thr period of the function : f(x)=3sin2{3x}+5cos3{2x} is (where {} denotes fraction part function) |
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Answer» Thr period of the function : f(x)=3sin2{3x}+5cos3{2x} is (where {} denotes fraction part function) |
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| 50. |
Number of 2-digit numbers (having different digits), which are divisible by 5 is |
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Answer» Number of 2-digit numbers (having different digits), which are divisible by 5 is |
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