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. |
Is the function, f(x) = min {x,x2} ᵿx ϵ R continuous? |
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Answer» Is the function, f(x) = min {x,x2} ᵿx ϵ R continuous? |
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| 2. |
If log(x2+y2)(0.5)=tan−1(xy) then show that dydx=(y−x)(y+x) |
| Answer» If log(x2+y2)(0.5)=tan−1(xy) then show that dydx=(y−x)(y+x) | |
| 3. |
4. Consider two sets A=\{a,b\}, B=\{e,f\}. Ifmaximum numbers of relations from A to B, A toA, B to B are l, m, n respectively then the valueof 2l-m-n |
| Answer» 4. Consider two sets A=\{a,b\}, B=\{e,f\}. Ifmaximum numbers of relations from A to B, A toA, B to B are l, m, n respectively then the valueof 2l-m-n | |
| 4. |
acos∆ - bsin∆=c.prove that asin∆+bcos∆= ±√(a^2 +b^2-c^2) |
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Answer» acos∆ - bsin∆=c.prove that asin∆+bcos∆= ±√(a^2 +b^2-c^2) |
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| 5. |
∫(3sec2x−4x+1x√x−7)dx |
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Answer» ∫(3sec2x−4x+1x√x−7)dx |
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| 6. |
The roots of the equation (x-1)³+8=0 are |
| Answer» The roots of the equation (x-1)³+8=0 are | |
| 7. |
If the coefficient of x in (x2+kx)5 is 270, then k = |
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Answer» If the coefficient of x in (x2+kx)5 is 270, then k = |
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| 8. |
If L=limx→0(tanxx)1/x2, then the value of L is |
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Answer» If L=limx→0(tanxx)1/x2, then the value of L is |
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| 9. |
53.The co-ordinates of the point on X-axis which are equidistant from the points (-3,4)and (2,5) are |
| Answer» 53.The co-ordinates of the point on X-axis which are equidistant from the points (-3,4)and (2,5) are | |
| 10. |
If A=[3−24−2]andI=[1100], then find k so that A2=kA−2I. |
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Answer» If A=[3−24−2]andI=[1100], then find k so that A2=kA−2I. |
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| 11. |
If the equation sin2(θ−α)cosα=cos2(θ−α)sinα=msinαcosα has solution for all permissible value of θ,α∈R then |
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Answer» If the equation sin2(θ−α)cosα=cos2(θ−α)sinα=msinαcosα has solution for all permissible value of θ,α∈R then |
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| 12. |
log3x+7(2a2+3)<0,∀ aϵR, if x lies in the interval (-a,-b) then 3a+ b is ___ |
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Answer» log3x+7(2a2+3)<0,∀ aϵR, if x lies in the interval (-a,-b) then 3a+ b is |
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| 13. |
The sum of all three digit numbers, formed using non zero digits, with all the digits perfect square of a natural number, is |
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Answer» The sum of all three digit numbers, formed using non zero digits, with all the digits perfect square of a natural number, is |
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| 14. |
34. if integral cos x/(sin^2/3 x+ sin^4/3 x) dx=Psin^1/4 x+Qsin^1/6 x + R sin^1/12 x-12log(1+sin^1/12x) + C then , the value of P+Q+R is |
| Answer» 34. if integral cos x/(sin^2/3 x+ sin^4/3 x) dx=Psin^1/4 x+Qsin^1/6 x + R sin^1/12 x-12log(1+sin^1/12x) + C then , the value of P+Q+R is | |
| 15. |
Verify Mean Value Theorem, if in the interval,where and. |
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Answer» Verify Mean Value Theorem, if |
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| 16. |
∫cosn−1xsinn+1xdx, n≠0 is |
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Answer» ∫cosn−1xsinn+1xdx, n≠0 is |
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| 17. |
Let f(x)=∣∣∣∣∣ω3ω4ω5sin(m−1)xsinmxsin(m+1)xcos(m−1)xcosmxcos(m+1)x∣∣∣∣∣, where m∈N and ω is the cube root of unity. If π/2∫0f(x)dx=aω+bω2, then (a,b)= |
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Answer» Let f(x)=∣∣ |
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| 18. |
A die is loaded so that the probability of a face i is proportional to i, i=1,2,...6. The probability of an even number occurring when the die is rolled is b7, the value of b is |
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Answer» A die is loaded so that the probability of a face i is proportional to i, i=1,2,...6. The probability of an even number occurring when the die is rolled is b7, the value of b is |
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| 19. |
Match the following :Column - IColumn - II(P) Two 8 faced dice (numbered from 1 to 8) are tossed simultaneously. The probability that the product of outcomes on the two dice is a perfect square is t16, then t is equal to(i) 2(Q) Let us consider the mapping f:1,2,3,4→5,6,7,8,9. If the probability of 'f' being strictly monotonic is k125, then k is equal to(ii) 7(R) A bag contains 2 red, 3 white and 5 black balls. A ball is drawn at random, its colour is noted and replaced in the bag. Minimum number of times, a ball must be drawn so that the probability of getting a red ball for the first time is at least 12, is(iii) 5(S) A boy has a collection of blue and green marbles. the number of blue marbles belong to the set {2, 3, 4, ..., 13}. If two marbles are chosen simultaneously and at random from his collection, and the probability that they are of different colour is 12, then the possible number of blue marbles can be(iv) 4 (v) 3The correct option is |
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Answer» Match the following :
The correct option is |
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| 20. |
If A×B⊆C×D and A×B≠ϕ, prove that A⊆C and B⊆D. |
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Answer» If A×B⊆C×D and A×B≠ϕ, prove that A⊆C and B⊆D. |
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| 21. |
Find d²y/dx² of the followings:(1) sinx=(2tanθ)/(1+tan²θ),coty=(1-tan²θ)/(2tanθ)(2) x=a(cosθ+θsinθ),y=a(sinθ-θcosθ) |
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Answer» Find d²y/dx² of the followings: (1) sinx=(2tanθ)/(1+tan²θ), coty=(1-tan²θ)/(2tanθ) (2) x=a(cosθ+θsinθ), y=a(sinθ-θcosθ) |
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| 22. |
limx→π42√2−(cosx+sinx)31−sin2x is equal to |
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Answer» limx→π42√2−(cosx+sinx)31−sin2x is equal to |
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| 23. |
Determine the number of 5-card combinations out of a deck of 52 cards if each selection of 5 cards has exactly one king. |
| Answer» Determine the number of 5-card combinations out of a deck of 52 cards if each selection of 5 cards has exactly one king. | |
| 24. |
Number of circular permutations of n distinct objects is |
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Answer» Number of circular permutations of n distinct objects is |
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| 25. |
Let 2sin2x+3sinx−2 >0 and x2−x−2 < 0 (x is measured in radians). Then x lies in the Interval |
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Answer» Let 2sin2x+3sinx−2 >0 and x2−x−2 < 0 (x is measured in radians). Then x lies in the Interval |
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| 26. |
79. Sin A=3/5 and cos B=9/41,A is greater than 0 and less than 90 ,then b is greater than -90 and less than 0 findsin A-B |
| Answer» 79. Sin A=3/5 and cos B=9/41,A is greater than 0 and less than 90 ,then b is greater than -90 and less than 0 findsin A-B | |
| 27. |
If tan θ=ab, then asin 2θ + b cos 2θ is equal to __________. |
| Answer» If then asin 2θ + b cos 2θ is equal to __________. | |
| 28. |
\operatorname{sin}^2θ+\operatorname{cos}^4θ=\operatorname{cos}^2θ+\operatorname{sin}^4θ |
| Answer» \operatorname{sin}^2θ+\operatorname{cos}^4θ=\operatorname{cos}^2θ+\operatorname{sin}^4θ | |
| 29. |
If 3π4<x<π, then cosec2x+2 cot x is equal to ___________. |
| Answer» If then is equal to ___________. | |
| 30. |
Let the function f:R→R be defined by f(x)=cos x,∀x∈R. Show that f is neither one-one nor onto. |
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Answer» Let the function f:R→R be defined by f(x)=cos x,∀x∈R. Show that f is neither one-one nor onto. |
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| 31. |
If a sequence is given by 9,12,15,18,⋯, then the value of 16th term is |
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Answer» If a sequence is given by 9,12,15,18,⋯, then the value of 16th term is |
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| 32. |
For hyperbola x2cos2α−y2sin2α=1, which of the following remains constant with change in ′α′ ? |
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Answer» For hyperbola x2cos2α−y2sin2α=1, which of the following remains constant with change in ′α′ ? |
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| 33. |
A and B are two square matrices such that A2B=BA and if (AB)10=Ak.B10 then the value of k−1020 is |
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Answer» A and B are two square matrices such that A2B=BA and if (AB)10=Ak.B10 then the value of k−1020 is |
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| 34. |
If \operatorname{tan(x+y)=33 and x=\operatorname{tan^{-13, then y will be |
| Answer» If \operatorname{tan(x+y)=33 and x=\operatorname{tan^{-13, then y will be | |
| 35. |
The number of solution(s) of the equation z2+|z|=0, where z∈C is |
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Answer» The number of solution(s) of the equation z2+|z|=0, where z∈C is |
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| 36. |
14. sin (r + a) |
| Answer» 14. sin (r + a) | |
| 37. |
Prove that the Greatest Integer Function f : R → R given by f ( x ) = [ x ], is neither one-one nor onto, where [ x ] denotes the greatest integer less than or equal to x . |
| Answer» Prove that the Greatest Integer Function f : R → R given by f ( x ) = [ x ], is neither one-one nor onto, where [ x ] denotes the greatest integer less than or equal to x . | |
| 38. |
∫√x√a3−x3dx= |
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Answer» ∫√x√a3−x3dx= |
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| 39. |
If the vector →p=(a+1)^i+a^j+a^k,→q=a^i+(a+1)^j+a^k and →r=a^i+a^j+(a+1)^k, (a∈R) are coplanar and 3(→p.→q)2−λ|→r×→q|2=0, then value of` λ is |
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Answer» If the vector →p=(a+1)^i+a^j+a^k,→q=a^i+(a+1)^j+a^k and →r=a^i+a^j+(a+1)^k, (a∈R) are coplanar and 3(→p.→q)2−λ|→r×→q|2=0, then value of` λ is |
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| 40. |
If n is a integer which lies in [5,100], then the number of integral roots of the equation x2+2x−n=0 is |
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Answer» If n is a integer which lies in [5,100], then the number of integral roots of the equation x2+2x−n=0 is |
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| 41. |
The entries in a 2X2 determinant ∣∣∣abcd∣∣∣ are integers chosen randomly and independently, and for each entry, the probability that the entry is odd is p. If the probability that value of determinant is even is12, then find the value of p |
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Answer» The entries in a 2X2 determinant ∣∣∣abcd∣∣∣ are integers chosen randomly and independently, and for each entry, the probability that the entry is odd is p. If the probability that value of determinant is even is12, then find the value of p |
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| 42. |
Two point charges repel each other with a force of 100 N. One of the charges is increased by 10% and the other is reduced by 10%. The new force of repulsion at the same distance would be |
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Answer» Two point charges repel each other with a force of 100 N. One of the charges is increased by 10% and the other is reduced by 10%. The new force of repulsion at the same distance would be |
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| 43. |
If c is a value of x for which Rolle's theorem holds for the function f(x)=sinx−sin2x on the interval [0,π], then the value of cosc is |
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Answer» If c is a value of x for which Rolle's theorem holds for the function f(x)=sinx−sin2x on the interval [0,π], then the value of cosc is |
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| 44. |
The value of f(0), so that the function f(x)=1−cos(1−cosx)x4 is continuous everywhere is |
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Answer» The value of f(0), so that the function f(x)=1−cos(1−cosx)x4 is continuous everywhere is |
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| 45. |
The harmonic mean of the roots of the equation (5+√2)x2−(4+√5)x+8+2√5=0 is |
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Answer» The harmonic mean of the roots of the equation (5+√2)x2−(4+√5)x+8+2√5=0 is |
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| 46. |
the range of the expression 2^x+2^{-x}+3^x+3^{-x} for x∈ R,is |
| Answer» the range of the expression 2^x+2^{-x}+3^x+3^{-x} for x∈ R,is | |
| 47. |
limx→π4cosec2x−2cotx−1 |
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Answer» limx→π4cosec2x−2cotx−1 |
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| 48. |
A force →F=(3t^i+5^j) N acts on a body whose displacement varies as →s=(2t2^i−5^j) m. Work done by this force in t=0 to 2 sec is (in Joule): |
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Answer» A force →F=(3t^i+5^j) N acts on a body whose displacement varies as →s=(2t2^i−5^j) m. Work done by this force in t=0 to 2 sec is (in Joule): |
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| 49. |
{ The domain of }f(x)=\sqrt{1-2\sqrt x+x} is |
| Answer» { The domain of }f(x)=\sqrt{1-2\sqrt x+x} is | |
| 50. |
19. If x(1+y1) = 2y then show that y2 is constant. y1 is defined as 1st order derivative of y with respect to x and y2 is defined as 2nd order derivative of y with respect to x . |
| Answer» 19. If x(1+y1) = 2y then show that y2 is constant. y1 is defined as 1st order derivative of y with respect to x and y2 is defined as 2nd order derivative of y with respect to x . | |