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. |
Integrate the following functions. ∫ sin (ax+b)cos (ax+b)dx. |
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Answer» Integrate the following functions. |
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| 2. |
Domian of the function f(x)=log2(log4(log2(log3(x2+4x−23)))) is |
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Answer» Domian of the function f(x)=log2(log4(log2(log3(x2+4x−23)))) is |
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| 3. |
If fifth term of a G.P. is 2, then the product of its first 9 terms is |
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Answer» If fifth term of a G.P. is 2, then the product of its first 9 terms is |
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| 4. |
Shriya and Vidya solved a quadratic equation. In solving it, Shriya made a mistake in the constant term and obtained the roots as 5, – 3 while Vidya made a mistake in the coefficient of x and obtained the roots as 1, –3. What are the correct roots of the equation? |
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Answer» Shriya and Vidya solved a quadratic equation. In solving it, Shriya made a mistake in the constant term and obtained the roots as 5, – 3 while Vidya made a mistake in the coefficient of x and obtained the roots as 1, –3. What are the correct roots of the equation? |
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| 5. |
Detailed difference between sequence, series and Progression. |
| Answer» Detailed difference between sequence, series and Progression. | |
| 6. |
Expand the expression |
| Answer» Expand the expression | |
| 7. |
Let A, B, C are three sets such that n(A∩B)=n(B∩C)=n(C∩A)=n(A∩B∩C)=2, then n((A×B)∩(B×C)) is equal to |
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Answer» Let A, B, C are three sets such that n(A∩B)=n(B∩C)=n(C∩A)=n(A∩B∩C)=2, then n((A×B)∩(B×C)) is equal to |
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| 8. |
If the function f(x)={k1(x−π)2−1,x≤πk2cosx,x>π is twice differentiable, then the ordered pair (k1,k2) is equal to: |
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Answer» If the function f(x)={k1(x−π)2−1,x≤πk2cosx,x>π is twice differentiable, then the ordered pair (k1,k2) is equal to: |
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| 9. |
The distance of the point (1, 0, 2) from the point of intersection of the line x−23=y+14=z−212 and the plane x - y + z = 16 is |
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Answer» The distance of the point (1, 0, 2) from the point of intersection of the line |
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| 10. |
Find the roots of the following equation, if they exist, by applying the quadratic formula: x2+5x−(a2+a−6)=0 |
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Answer» Find the roots of the following equation, if they exist, by applying the quadratic formula: x2+5x−(a2+a−6)=0 |
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| 11. |
The value of sin−1(sin5π6) is |
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Answer» The value of sin−1(sin5π6) is |
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| 12. |
Solve the following equations for x:(i) tan-114+2 tan-115+tan-116+tan-11x=π4(ii) 3 sin-12x1+x2-4 cos-11-x21+x2+2 tan-12x1-x2=π3(iii) tan-12x1-x2+cot-11-x22x=2π3, x>0(iv) (v)(vi) tan-1 x-2x-1+tan-1 x+2x+1=π4 |
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Answer» Solve the following equations for x: (i) (ii) (iii) (iv) (v) (vi) |
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| 13. |
The total number of four-digit numbers xyzt such that x<y=z>t is |
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Answer» The total number of four-digit numbers xyzt such that x<y=z>t is |
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| 14. |
20. Equation of the circle which is such that the lengths of the tangents to it from the points (1,0),(0,2)and (3,2) are 1,7 and 2 respectively is |
| Answer» 20. Equation of the circle which is such that the lengths of the tangents to it from the points (1,0),(0,2)and (3,2) are 1,7 and 2 respectively is | |
| 15. |
Determine whether or not each of the definition of ∗ given below gives a binary operation. In the event that ∗ is not a binary operation, give justification for this. (v) On Z+, defined ∗ by a∗b=a |
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Answer» Determine whether or not each of the definition of ∗ given below gives a binary operation. In the event that ∗ is not a binary operation, give justification for this. |
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| 16. |
Differentiate thefunction with respect to x. |
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Answer» Differentiate the
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| 17. |
Let α and β be the roots of equation px2+qx+r=0,p≠0. If p,q,r are in A.P. and 1α+1β=4, then the value of |α−β| is |
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Answer» Let α and β be the roots of equation px2+qx+r=0,p≠0. If p,q,r are in A.P. and 1α+1β=4, then the value of |α−β| is |
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| 18. |
In the accompanying diagram a fair spinner is placed at the centre O of the circle Diameter AOB and radius OC divide the circle into three regions labelled X, Y and Z. It ∠BOC = 45°. What is the probability that the spinner will land in the region X? (in the given figure). |
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Answer» In the accompanying diagram a fair spinner is placed at the centre O of the circle Diameter AOB and radius OC divide the circle into three regions labelled X, Y and Z. It ∠BOC = 45°. What is the probability that the spinner will land in the region X? (in the given figure).
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| 19. |
In SHM, which equation represent general equation, equation from mean position, equation from extreme position respectively.(P)y=Asin(wt+α)(Q)y=Asin(wt) (R)y=Acos(wt) A.R,Q,PB.P,R,QC.P,Q,RD.Q,R,P |
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Answer» In SHM, which equation represent general equation, equation from mean position, equation from extreme position respectively. (P)y=Asin(wt+α) (Q)y=Asin(wt) (R)y=Acos(wt) A.R,Q,P B.P,R,Q C.P,Q,R D.Q,R,P
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| 20. |
If α is the greater root of x2−5x+4=0 and α+m=2, then the value of m is |
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Answer» If α is the greater root of x2−5x+4=0 and α+m=2, then the value of m is |
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| 21. |
The equation of the circle which is touched by y=x, has its centre on the positive direction of the x-axis and cuts off a chord of length 2 units along the line √3y−x=0, is |
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Answer» The equation of the circle which is touched by y=x, has its centre on the positive direction of the x-axis and cuts off a chord of length 2 units along the line √3y−x=0, is |
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| 22. |
Prove the following identities (1-16)sin3 x+cos3 xsin x+cos x+sin3 x-cos3 xsin x-cos x=2 |
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Answer» Prove the following identities (1-16) |
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| 23. |
Find X if 2X+3Y=[2340]and 3X+2Y=[7−2−15] |
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Answer» Find X if 2X+3Y=[2340]and 3X+2Y=[7−2−15] |
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| 24. |
If for the complex number z satisfying |z−2−2i|≤1, the maximum value of |3iz+6| is attained at a+ib, then a+b is equal to |
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Answer» If for the complex number z satisfying |z−2−2i|≤1, the maximum value of |3iz+6| is attained at a+ib, then a+b is equal to |
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| 25. |
The value of 'a + b' such that the surfaceax2−byz=(a+2)x is orthogonal to the surface 4x2y+z3=4 at the point (1, -1, 2) is ________ .3.5 |
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Answer» The value of 'a + b' such that the surface ax2−byz=(a+2)x is orthogonal to the surface 4x2y+z3=4 at the point (1, -1, 2) is ________ .
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| 26. |
If ∫1sinxt2.f(t)dt=1−sinx,∀xϵ(0,π2) then the value of f(1√3) is |
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Answer» If ∫1sinxt2.f(t)dt=1−sinx,∀xϵ(0,π2) then the value of f(1√3) is |
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| 27. |
If the roots of 4x2−(5k+1)x+5k=0 differ by unity then the sum of all the possible values of k is |
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Answer» If the roots of 4x2−(5k+1)x+5k=0 differ by unity then the sum of all the possible values of k is |
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| 28. |
lf the projections of the line segment AB on the YZ-plane, ZX-plane, XY-plane are √160,√153,5 respectively, then the projection of AB on the z-axis is |
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Answer» lf the projections of the line segment AB on the YZ-plane, ZX-plane, XY-plane are √160,√153,5 respectively, then the projection of AB on the z-axis is |
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| 29. |
The sum of all the real solution(s) of tan−1x−cot−1x=cos−1(2−x) is |
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Answer» The sum of all the real solution(s) of tan−1x−cot−1x=cos−1(2−x) is |
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| 30. |
Let |z|=2 and locus of 3z+1 be a circle having radius a and z21+z22−2cosθz1z2=0. If |z1|:|z2|=a:b then b is equal to |
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Answer» Let |z|=2 and locus of 3z+1 be a circle having radius a and z21+z22−2cosθz1z2=0. If |z1|:|z2|=a:b then b is equal to |
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| 31. |
If A and B are square matrices of the same order such that AB = BA , then prove by induction that . Further, prove that for all n ∈ N |
| Answer» If A and B are square matrices of the same order such that AB = BA , then prove by induction that . Further, prove that for all n ∈ N | |
| 32. |
49. Let z be the set of all integers and A={(a,b): a + 3b= 28,a,b belong to z} B={(a,b): a>b,a,b belong to Z } Then n(AintersectionB) is equal to |
| Answer» 49. Let z be the set of all integers and A={(a,b): a + 3b= 28,a,b belong to z} B={(a,b): a>b,a,b belong to Z } Then n(AintersectionB) is equal to | |
| 33. |
Number of non negative integral solutions of A+B+C+D=12 where A,B>0 and 0<D<5 is |
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Answer» Number of non negative integral solutions of A+B+C+D=12 where A,B>0 and 0<D<5 is |
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| 34. |
4tan x (1- tan21-6 tan2x tan4x23.tan 4x =x) |
| Answer» 4tan x (1- tan21-6 tan2x tan4x23.tan 4x =x) | |
| 35. |
Intriangle ABC which of the following is not true:A. B. C. D. |
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Answer» In
A. B. C. D. |
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| 36. |
If 4 sin2 x=1, then the values of x are(a) 2 nπ±π3, n ∈ Z(b) nπ±π3, n ∈ Z(c) nπ±π6, n ∈ Z(d) 2 nπ±π6, n ∈Z |
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Answer» If , then the values of x are (a) (b) (c) (d) |
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| 37. |
If sinA=1213,cosB=−35,0<A<π2, π<B<3π2, then the value of sin(A+B) is |
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Answer» If sinA=1213,cosB=−35,0<A<π2, π<B<3π2, then the value of sin(A+B) is |
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| 38. |
The number of roots of ex+0.5x2−2=0 in the range [−5,5] is |
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Answer» The number of roots of ex+0.5x2−2=0 in the range [−5,5] is |
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| 39. |
Suppose x and y are natural numbers, then the number of ordered pairs (x,y) which satisfy x+y≤5 is |
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Answer» Suppose x and y are natural numbers, then the number of ordered pairs (x,y) which satisfy x+y≤5 is |
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| 40. |
If A=[abb2−a2−ab] and An=O, then the minimum value of ′n′ is |
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Answer» If A=[abb2−a2−ab] and An=O, then the minimum value of ′n′ is |
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| 41. |
Let A be a vector parallel to line of intersection of planes P1:x=0 and P2:x−y−z=0 through origin. The acute angle between A and 2^i+^j−2^k is |
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Answer» Let A be a vector parallel to line of intersection of planes P1:x=0 and P2:x−y−z=0 through origin. The acute angle between A and 2^i+^j−2^k is |
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| 42. |
54 what are rational and irrational functions ? |
| Answer» 54 what are rational and irrational functions ? | |
| 43. |
If sinx=35,cosy=−1213, where x and y both lie in second quadrant, find the value of sin(x+y). |
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Answer» If sinx=35,cosy=−1213, where x and y both lie in second quadrant, find the value of sin(x+y). |
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| 44. |
AB, BC, CD, DE and EF are 5 vectors as shown in the figure.Joining which 2 points will give the magnitude of resultant of ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯BC+¯¯¯¯¯¯¯¯¯CD+¯¯¯¯¯¯¯¯¯DE+¯¯¯¯¯¯¯¯EF |
Answer» AB, BC, CD, DE and EF are 5 vectors as shown in the figure.![]() Joining which 2 points will give the magnitude of resultant of ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯BC+¯¯¯¯¯¯¯¯¯CD+¯¯¯¯¯¯¯¯¯DE+¯¯¯¯¯¯¯¯EF |
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| 45. |
Let A and B be any two events such that P(A)=12 and P(B)=13. Then the value of P(A′∩B′)′+P(A′∪B′)′ is |
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Answer» Let A and B be any two events such that P(A)=12 and P(B)=13. Then the value of P(A′∩B′)′+P(A′∪B′)′ is |
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| 46. |
Using the method of integration,find the area of the triangle ABC,coordinates of whose vertices are A(4,1),B(6,6) and C(8,4). |
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Answer» Using the method of integration,find the area of the triangle ABC,coordinates of whose vertices are A(4,1),B(6,6) and C(8,4). |
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| 47. |
What is crusa cerebri and it connects what to what? |
| Answer» What is crusa cerebri and it connects what to what? | |
| 48. |
Prove that the coefficient of x n in the expansion of (1 + x ) 2 n is twice the coefficient of x n in the expansion of (1 + x ) 2 n –1 . |
| Answer» Prove that the coefficient of x n in the expansion of (1 + x ) 2 n is twice the coefficient of x n in the expansion of (1 + x ) 2 n –1 . | |
| 49. |
Find the angle between the lines whose direction cosines are given by the equations(i) l + m + n = 0 and l2 + m2 − n2 = 0(ii) 2l − m + 2n = 0 and mn + nl + lm = 0(iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0(iv) 2l + 2m − n = 0, mn + ln + lm = 0 |
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Answer» Find the angle between the lines whose direction cosines are given by the equations (i) l + m + n = 0 and l2 + m2 − n2 = 0 (ii) 2l − m + 2n = 0 and mn + nl + lm = 0 (iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0 (iv) 2l + 2m − n = 0, mn + ln + lm = 0 |
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| 50. |
If a matrix has 24 elements, what are the possible order it can have? What, if it has 13 elements? |
| Answer» If a matrix has 24 elements, what are the possible order it can have? What, if it has 13 elements? | |