InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 8251. |
For x∈R, x≠0 if y(x) is a differentiable function such that xx∫1y(t) dt=(x+1)x∫1t y(t) dt, then y(x) equals: |
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Answer» For x∈R, x≠0 if y(x) is a differentiable function such that xx∫1y(t) dt=(x+1)x∫1t y(t) dt, then y(x) equals: |
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| 8252. |
If fx=x2-22x+1, then f22 is equal to(a) 0(b) 1(c) 42(d) 82+1 |
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Answer» If is equal to (a) 0 (b) 1 (c) (d) |
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| 8253. |
Match List I with the List II and select the correct answer using the code given below the lists : List IList II(A)Lines with direction ratios (1,–c,–b),(–c,1,–a) and (–b,–a,1) (P)−1are coplanar. Then a2+b2+c2+2abc is(B)If the lines x=ay+1,z=by+2 and x=cy+3,z=dy+4 (Q)1are perpendicular, then ac+bd is equal to(C)If (a,b,c) lies on a plane which forms △ABC with coordinate axes (R)3whose centroid lies on (α,β,γ), then aα+bβ+cγ is equal to(D)Let [x] denote the greatest integer less than or equal to x.Then(S)0f(x)=[xsinπx] is not differentiable when x is equal to(T)2Which of the following is the only CORRECT combination? |
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Answer» Match List I with the List II and select the correct answer using the code given below the lists : |
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| 8254. |
If P (n) is the statement "n3+n is divisible by 3", prove that P(3) is true but P(4) is not true. |
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Answer» If P (n) is the statement "n3+n is divisible by 3", prove that P(3) is true but P(4) is not true. |
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| 8255. |
A point R with x-coordinate 4 lies on the line segment joining the pointsP (2, –3, 4) and Q (8, 0, 10). Find the coordinates of the point R.[Hint suppose R divides PQ in the ratio k: 1. The coordinates of the point R are given by |
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Answer» A point R with x-coordinate 4 lies on the line segment joining the pointsP (2, –3, 4) and Q (8, 0, 10). Find the coordinates of the point R. [Hint suppose R divides PQ in the ratio k: 1. The coordinates of the point R are given by |
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| 8256. |
{ 65. If }\operatorname{sin}θ+\operatorname{sin}^2θ=1, find the value of }\operatorname{cos}^{12}θ+3\operatorname{cos}^{10}θ}{+3\operatorname{cos}^8θ+\operatorname{cos}^6θ+6\operatorname{cos}^4θ+6\operatorname{cos}^2θ+\operatorname{sin}^2θ+\operatorname{sin}θ |
| Answer» { 65. If }\operatorname{sin}θ+\operatorname{sin}^2θ=1, find the value of }\operatorname{cos}^{12}θ+3\operatorname{cos}^{10}θ}{+3\operatorname{cos}^8θ+\operatorname{cos}^6θ+6\operatorname{cos}^4θ+6\operatorname{cos}^2θ+\operatorname{sin}^2θ+\operatorname{sin}θ | |
| 8257. |
2· y=x2 + 2x + C |
| Answer» 2· y=x2 + 2x + C | |
| 8258. |
For any two complex numbers z1 and z2 and two real numbers, a, b, find the value of |az1−bz2|2+|bz1+bz2|2. |
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Answer» For any two complex numbers z1 and z2 and two real numbers, a, b, find the value of |az1−bz2|2+|bz1+bz2|2. |
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| 8259. |
Find the sum to n terms of the series 1 × 2 × 3 + 2 × 3 × 4 + 3 × 4 × 5 + … |
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Answer» Find the sum to n terms of the series 1 × 2 × 3 + 2 × 3 × 4 + 3 × 4 × 5 + … |
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| 8260. |
If the inequality (x-(a-1))(x-(a²+2)) |
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Answer» If the inequality (x-(a-1))(x-(a²+2))<0 holds for all x belongs to (-1,3] then correct statements are 1) a²≥1 2)a≥1 3)a≤-1 4)a≤0 |
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| 8261. |
If y=500e7x+600e−7x, show that d2ydx2=49y. |
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Answer» If y=500e7x+600e−7x, show that d2ydx2=49y. |
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| 8262. |
The general solution of dydx=(x+y)2, where c is the constant of integration, is |
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Answer» The general solution of dydx=(x+y)2, where c is the constant of integration, is |
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| 8263. |
The angles A,B and C of a triangle ABC are in A.P. and a:b=1:√3. If c=4 cm, then the area (in sq.cm) of this triangle is: |
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Answer» The angles A,B and C of a triangle ABC are in A.P. and a:b=1:√3. If c=4 cm, then the area (in sq.cm) of this triangle is: |
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| 8264. |
Show that the function given by f ( x ) = sin x is (a) strictly increasing in (b) strictly decreasing in (c) neither increasing nor decreasing in (0, π) |
| Answer» Show that the function given by f ( x ) = sin x is (a) strictly increasing in (b) strictly decreasing in (c) neither increasing nor decreasing in (0, π) | |
| 8265. |
In a Δ ABC, if ∠B=60∘, prove that (a+b+c)(a−b+c)=3ca |
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Answer» In a Δ ABC, if ∠B=60∘, prove that (a+b+c)(a−b+c)=3ca |
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| 8266. |
The negation of the Boolean expression p∨(∼p∧q) is equivalent to: |
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Answer» The negation of the Boolean expression p∨(∼p∧q) is equivalent to: |
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| 8267. |
If A = {x: x is a natural number}, B ={x: x is an even natural number} C = {x: x is an odd natural number} and D = {x: x is a prime number}, find (i) A ∩ B (ii) A ∩ C (iii) A ∩ D (iv) B ∩ C (v) B ∩ D (vi) C ∩ D |
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Answer» If A = {x: x is a natural number}, B ={x: x is an even natural number} C = {x: x is an odd natural number} and D = {x: x is a prime number}, find (i) A ∩ B (ii) A ∩ C (iii) A ∩ D (iv) B ∩ C (v) B ∩ D (vi) C ∩ D |
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| 8268. |
∫ex(2+sin 2x1+cos 2x)dx= |
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Answer» ∫ex(2+sin 2x1+cos 2x)dx= |
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| 8269. |
Y = tan[5/2t +/6]. Dy/dt when t=0 |
| Answer» Y = tan[5/2t +/6]. Dy/dt when t=0 | |
| 8270. |
For the interval [−2π,2π], cosx<0 in the interval |
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Answer» For the interval [−2π,2π], cosx<0 in the interval |
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| 8271. |
If the length of the tangents from (a,b) to the circles x2+y2−4x−5=0 and x2+y2+6x−2y+6=0 are equal, then the value of 10a−2b is |
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Answer» If the length of the tangents from (a,b) to the circles x2+y2−4x−5=0 and x2+y2+6x−2y+6=0 are equal, then the value of 10a−2b is |
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| 8272. |
Which of the following belong to the set of irrational numbers? |
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Answer» Which of the following belong to the set of irrational numbers? |
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| 8273. |
What is linear programming? |
| Answer» What is linear programming? | |
| 8274. |
The locus of the mid-points of the perpendiculars drawn from points on the line, x=2y to the line x=y is : |
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Answer» The locus of the mid-points of the perpendiculars drawn from points on the line, x=2y to the line x=y is : |
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| 8275. |
If n(A)=m,m>0, then number of reflexive relations from A to A is |
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Answer» If n(A)=m,m>0, then number of reflexive relations from A to A is |
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| 8276. |
If ax2+bx+c=0 and bx2+cx+a=0 have a common root and a, b, c are non-zero real numbers, then find the value of a3+b3+c3abc |
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Answer» If ax2+bx+c=0 and bx2+cx+a=0 have a common root and a, b, c are non-zero real numbers, then find the value of a3+b3+c3abc |
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| 8277. |
Find a positive value of m for which the coefficient of x 2 in the expansion (1 + x ) m is 6. |
| Answer» Find a positive value of m for which the coefficient of x 2 in the expansion (1 + x ) m is 6. | |
| 8278. |
Let a function g:[0,4]→R be defined as g(x)={max0≤t≤x{t3−6t2+9t−3},0≤x≤34−x,3<x≤4,then the number of points in the interval (0,4) where g(x) is NOT differentiable, is |
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Answer» Let a function g:[0,4]→R be defined as g(x)={max0≤t≤x{t3−6t2+9t−3},0≤x≤34−x,3<x≤4, then the number of points in the interval (0,4) where g(x) is NOT differentiable, is |
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| 8279. |
An experiment consists of 3 throws of a coin and success means 2 heads. The probability of no success, if experiment is repeated 3 times, is: |
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Answer» An experiment consists of 3 throws of a coin and success means 2 heads. The probability of no success, if experiment is repeated 3 times, is: |
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| 8280. |
If , for, −1 < x |
| Answer» If , for, −1 < x <1, prove that | |
| 8281. |
On her birthday Seema decide to donate some money to children of an orphanage home. if there were 8 children less. everyone would have got Rs. 10 more.however if there were 16 children more everyone would have got Rs. 10 less. using matrix multiplication find the number of children and amount distributed by Seema. |
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Answer» On her birthday Seema decide to donate some money to children of an orphanage home. if there were 8 children less. everyone would have got Rs. 10 more.however if there were 16 children more everyone would have got Rs. 10 less. using matrix multiplication find the number of children and amount distributed by Seema. |
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| 8282. |
If the matrix A=⎡⎢⎣0−21ba4c−40⎤⎥⎦ is skew-symmetric, then the values of a+b+c is (a) 1 (b) −1 (c) 0 (d) 2 |
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Answer» If the matrix A=⎡⎢⎣0−21ba4c−40⎤⎥⎦ is skew-symmetric, then the values of a+b+c is (a) 1 (b) −1 (c) 0 (d) 2 |
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| 8283. |
Why we need minimum 4 terms to define whether the sequence is AGP or not?? |
| Answer» Why we need minimum 4 terms to define whether the sequence is AGP or not?? | |
| 8284. |
8.A bag contains 15 balls of which 6 are identical find the number of ways of selecting 8 balls. |
| Answer» 8.A bag contains 15 balls of which 6 are identical find the number of ways of selecting 8 balls. | |
| 8285. |
State true or false?The coordinates of origin is (0,0). |
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Answer» State true or false? The coordinates of origin is (0,0). |
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| 8286. |
If ω is a cube root of unity, then sinπ900{10∑r=1(r−ω)(r−ω2)}= |
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Answer» If ω is a cube root of unity, then sinπ900{10∑r=1(r−ω)(r−ω2)}= |
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| 8287. |
If the 2nd,3rd and 4th terms in the expansion of (x+a)n are 240,720 and 1080 respectively, then the value of (x−a)n is |
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Answer» If the 2nd,3rd and 4th terms in the expansion of (x+a)n are 240,720 and 1080 respectively, then the value of (x−a)n is |
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| 8288. |
(sinα)x4+(cosβ)x3+(cosγ)x2+3x+6 is a quadratic polynomial such that α,β,γ∈[0,π2], then select the correct statements. |
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Answer» (sinα)x4+(cosβ)x3+(cosγ)x2+3x+6 is a quadratic polynomial such that α,β,γ∈[0,π2], then select the correct statements. |
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| 8289. |
The solution set of the inequality (log10x)4−13(log10x)2+36>0 is |
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Answer» The solution set of the inequality (log10x)4−13(log10x)2+36>0 is |
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| 8290. |
The function {(−1)[x],x<0limn→∞(11+xn),x⩾0 then the number of integral values of x in [−3,5] where f(x) is discontinuous is / are ([.] denotes greatest integer function) |
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Answer» The function {(−1)[x],x<0limn→∞(11+xn),x⩾0 then the number of integral values of x in [−3,5] where f(x) is discontinuous is / are ([.] denotes greatest integer function) |
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| 8291. |
How to find matrix of minor and calculate the determinant using the remaining values. |
| Answer» How to find matrix of minor and calculate the determinant using the remaining values. | |
| 8292. |
The value of c for which Lagrange's theorem f(x) = |x| in the interval [-1, 1] is |
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Answer» The value of c for which Lagrange's theorem f(x) = |x| in the interval [-1, 1] is |
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| 8293. |
Evaluate the given limit :limx→44x+3x−2 |
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Answer» Evaluate the given limit : limx→44x+3x−2 |
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| 8294. |
If A and B are mutually exclusive events then(a) PA≤PB (b) PA≥PB (c) PA<PB (d) None of these |
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Answer» If A and B are mutually exclusive events then (a) (b) (c) (d) None of these |
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| 8295. |
If 1+1x<0, then x lies in |
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Answer» If 1+1x<0, then x lies in |
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| 8296. |
Number of ways the letters of word LETTER can be arranged such that vowels do not occur together |
| Answer» Number of ways the letters of word LETTER can be arranged such that vowels do not occur together | |
| 8297. |
The minimum value of the function f(x)=∣∣2−|1−x|∣∣−1, where |x| denotes the absolute value of x, is |
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Answer» The minimum value of the function f(x)=∣∣2−|1−x|∣∣−1, where |x| denotes the absolute value of x, is |
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| 8298. |
The degree of the differential equation satisfying the equation x2a2+λ+y2b2+λ=1 where a and b are specified constants and λ is an arbitrary parameter, is |
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Answer» The degree of the differential equation satisfying the equation x2a2+λ+y2b2+λ=1 where a and b are specified constants and λ is an arbitrary parameter, is |
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| 8299. |
If I1=∫e2e dxlog x and I2=∫21 exxdx, then |
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Answer» If I1=∫e2e dxlog x and I2=∫21 exxdx, then |
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| 8300. |
Solve the following system of equations by matrix method:(i) x + y − z = 32x + 3y + z = 103x − y − 7z = 1(ii) x + y + z = 32x − y + z = − 12x + y − 3z = − 9(iii) 6x − 12y + 25z = 44x + 15y − 20z = 32x + 18y + 15z = 10(iv) 3x + 4y + 7z = 142x − y + 3z = 4x + 2y − 3z = 0(v)2x-3y+3z=101x+1y+1z=103x-1y+2z=13(vi) 5x + 3y + z = 162x + y + 3z = 19x + 2y + 4z = 25(vii) 3x + 4y + 2z = 82y − 3z = 3x − 2y + 6z = −2(viii) 2x + y + z = 2x + 3y − z = 53x + y − 2z = 6(ix) 2x + 6y = 23x − z = −82x − y + z = −3(x) x − y + z = 22x − y = 02y − z = 1(xi) 8x + 4y + 3z = 182x + y +z = 5x + 2y + z = 5(xii) x + y + z = 6x + 2z = 73x + y + z = 12(xiii) 2x+3y+10z=4, 4x-6y+5z=1, 6x+9y-20z=2;x, y, z≠0(xiv) x − y + 2z = 73x + 4y − 5z = −52x − y + 3z = 12 |
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Answer» Solve the following system of equations by matrix method: (i) x + y − z = 3 2x + 3y + z = 10 3x − y − 7z = 1 (ii) x + y + z = 3 2x − y + z = − 1 2x + y − 3z = − 9 (iii) 6x − 12y + 25z = 4 4x + 15y − 20z = 3 2x + 18y + 15z = 10 (iv) 3x + 4y + 7z = 14 2x − y + 3z = 4 x + 2y − 3z = 0 (v) (vi) 5x + 3y + z = 16 2x + y + 3z = 19 x + 2y + 4z = 25 (vii) 3x + 4y + 2z = 8 2y − 3z = 3 x − 2y + 6z = −2 (viii) 2x + y + z = 2 x + 3y − z = 5 3x + y − 2z = 6 (ix) 2x + 6y = 2 3x − z = −8 2x − y + z = −3 (x) x − y + z = 2 2x − y = 0 2y − z = 1 (xi) 8x + 4y + 3z = 18 2x + y +z = 5 x + 2y + z = 5 (xii) x + y + z = 6 x + 2z = 7 3x + y + z = 12 (xiii) (xiv) x − y + 2z = 7 3x + 4y − 5z = −5 2x − y + 3z = 12 |
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