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.
| 8651. |
The set of real values of x satisfying the equation |x−1|log3(x2)−2logx(9)=(x−1)7is |
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Answer» The set of real values of x satisfying the equation |
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| 8652. |
If y=ax+x2+1n+bx-x2+1-n, prove that x2+1d2ydx2+xdydx-n2y=0.Disclaimer: There is a misprint in the question, x2+1d2ydx2+xdydx-n2y=0 must be written instead of x2-1d2ydx2+xdydx-n2y=0. |
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Answer» Disclaimer: There is a misprint in the question, must be written instead of |
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| 8653. |
WHY DIFFERENTIATION OF X^2 IS 2X*DX(X)/DT AND NOT 2X? |
| Answer» WHY DIFFERENTIATION OF X^2 IS 2X*DX(X)/DT AND NOT 2X? | |
| 8654. |
Show that the points ^i−^j+3^k and 3(^i+^j+^k) are equidistant from the plane →r.(5^i+2^j−7^k)+9=0 and lies on opposite side of it. |
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Answer» Show that the points ^i−^j+3^k and 3(^i+^j+^k) are equidistant from the plane →r.(5^i+2^j−7^k)+9=0 and lies on opposite side of it. |
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| 8655. |
If alpha beta and gama are the roots of the equation x'3+4x+1=0 then (alpha+beta)'-1 +(beta+gama)'-1+(alpha+gama)'-1 is |
| Answer» If alpha beta and gama are the roots of the equation x'3+4x+1=0 then (alpha+beta)'-1 +(beta+gama)'-1+(alpha+gama)'-1 is | |
| 8656. |
The point on the curve y=ex which is at shortest distance from the line y=x−4, is |
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Answer» The point on the curve y=ex which is at shortest distance from the line y=x−4, is |
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| 8657. |
The letters of word OUGHT are written in all possible orders and these words are written out as in a dictionary. Then the rank of the word TOUGH is |
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Answer» The letters of word OUGHT are written in all possible orders and these words are written out as in a dictionary. Then the rank of the word TOUGH is |
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| 8658. |
Let y=y(x) be the solution of the differential equation (y+1)tan2xdx+tanxdy+ydx=0,x∈(0,π2). If limx→0−xy(x)=1, then the value of y(π4) is |
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Answer» Let y=y(x) be the solution of the differential equation (y+1)tan2xdx+tanxdy+ydx=0,x∈(0,π2). If limx→0−xy(x)=1, then the value of y(π4) is |
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| 8659. |
[(1+cosA)/sinA] = [sinA/(1-cosA)] |
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Answer» [(1+cosA)/sinA] = [sinA/(1-cosA)] |
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| 8660. |
The resis†an ce R=v/i where v=(100_+5 |
| Answer» The resis†an ce R=v/i where v=(100_+5 | |
| 8661. |
If tan(A+B) =p and tan(A-B) = q, then write the value of tan2B. |
| Answer» If tan(A+B) =p and tan(A-B) = q, then write the value of tan2B. | |
| 8662. |
How to expand scalar triple product and vector triple product? |
| Answer» How to expand scalar triple product and vector triple product? | |
| 8663. |
-1 63167.+CoS13 |
| Answer» -1 63167.+CoS13 | |
| 8664. |
limx→0amx−1bnx−1,n≠0 |
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Answer» limx→0amx−1bnx−1,n≠0 |
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| 8665. |
91. If alpha and beta are roots of equation x(square) + px - q = 0 and gama and delta are roots of equation x (square) + px + r = 0 . Then prove that the value of (alpha-gama)(alpha-delta) is (q+r). |
| Answer» 91. If alpha and beta are roots of equation x(square) + px - q = 0 and gama and delta are roots of equation x (square) + px + r = 0 . Then prove that the value of (alpha-gama)(alpha-delta) is (q+r). | |
| 8666. |
Theprobability of obtaining an even prime number on each die, when apair of dice is rolled is(A) 0 (B) (C) (D) |
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Answer» The
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| 8667. |
If the ratio of 8 cookies in the purchased boxes to unpurchased stored boxes in the cookie shop is 8 : 2, then the number of the remaining cookies in unpurchased stored boxes in the cookies shop are . |
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Answer» If the ratio of 8 cookies in the purchased boxes to unpurchased stored boxes in the cookie shop is 8 : 2, then the number of the remaining cookies in unpurchased stored boxes in the cookies shop are |
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| 8668. |
Is f(x) = +or-x a function? |
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Answer» Is f(x) = +or-x a function? |
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| 8669. |
If a chord of the circle x2+y2−4x−2y−c=0 is trisected at the points (1/3, 1/3) and (8/3, 8/3), then |
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Answer» If a chord of the circle x2+y2−4x−2y−c=0 is trisected at the points (1/3, 1/3) and (8/3, 8/3), then |
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| 8670. |
The circle passing through (1,−2) and touching the axis of x at (3,0) also passes through the point |
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Answer» The circle passing through (1,−2) and touching the axis of x at (3,0) also passes through the point |
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| 8671. |
If α,β be the roots of x2+px+q=0 and α+h, β+h are the roots of x2+rx+s=0 , then |
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Answer» If α,β be the roots of x2+px+q=0 and α+h, β+h are the roots of x2+rx+s=0 , then |
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| 8672. |
If A,B,C are the angles of triangle such that 0<A≤π3, then the range of tanB+tanCtanBtanC−1 is |
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Answer» If A,B,C are the angles of triangle such that 0<A≤π3, then the range of tanB+tanCtanBtanC−1 is |
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| 8673. |
Locus of all such points from where the tangents drawn to the ellipse x2a2+y2b2=1 are always inclined at 45∘ is |
| Answer» Locus of all such points from where the tangents drawn to the ellipse x2a2+y2b2=1 are always inclined at 45∘ is | |
| 8674. |
Solve √3 cos x+sin x=√2. |
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Answer» Solve √3 cos x+sin x=√2. |
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| 8675. |
La Charlie's principal |
| Answer» La Charlie's principal | |
| 8676. |
If 3n−an−b is divisible by 4 for n∈N, then maximum value of a+b=(where a,b∈N are fixed constants) |
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Answer» If 3n−an−b is divisible by 4 for n∈N, then maximum value of a+b= (where a,b∈N are fixed constants) |
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| 8677. |
Find the probability of throwing at most 2 sixes in 6 throws of a single die. |
| Answer» Find the probability of throwing at most 2 sixes in 6 throws of a single die. | |
| 8678. |
Solve the following equations :(i) cot θ+tan θ=2(ii) 2 sin2θ=3 cosθ, 0 ≤ θ ≤ 2π(iii) sec θ cos 5θ+1=0, 0< θ<π2(iv) 5 cos2θ+7 sin2θ−6=0(v) sin x−3 sin 2x+sin 3x=cos x−3 cos 2x+cos 3x |
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Answer» Solve the following equations :(i) cot θ+tan θ=2(ii) 2 sin2θ=3 cosθ, 0 ≤ θ ≤ 2π(iii) sec θ cos 5θ+1=0, 0< θ<π2(iv) 5 cos2θ+7 sin2θ−6=0(v) sin x−3 sin 2x+sin 3x=cos x−3 cos 2x+cos 3x |
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| 8679. |
Match List I with the List II and select the correct answer using the code given below: List IList II(A)If E1 and E2 be mutually exclusive events, then1E1∩E2=E1(B)If E1 and E2 are mutually exclusive and exhaustive events, then2(E1−E2)∪(E1∩E2)=E1(C)If E1 and E2 have common outcomes, then3E1∩E2=ϕ,E1∪E2=S(D)If E1 and E2 are events such that E1⊂E2, then4E1∩E2=ϕWhich 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: |
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| 8680. |
If ω≠1 is a cube root of unity and ∣∣∣∣∣x+ω2ω1ωω21+x1x+ωω2∣∣∣∣∣=0, then value of x is |
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Answer» If ω≠1 is a cube root of unity and ∣∣ |
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| 8681. |
19.sin x cos3x |
| Answer» 19.sin x cos3x | |
| 8682. |
Minor M33 (Minor of the element of ith row and jth column) of the determinant ∣∣∣∣2352−18124∣∣∣∣ is |
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Answer» Minor M33 (Minor of the element of ith row and jth column) of the determinant ∣∣ |
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| 8683. |
Prove that 2sin2π6+cosec27π6cos2π3=32 |
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Answer» Prove that 2sin2π6+cosec27π6cos2π3=32 |
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| 8684. |
Using the method of integration find the area of the region bounded by lines: 2 x + y = 4, 3 x – 2 y = 6 and x – 3 y + 5 = 0 |
| Answer» Using the method of integration find the area of the region bounded by lines: 2 x + y = 4, 3 x – 2 y = 6 and x – 3 y + 5 = 0 | |
| 8685. |
The principle solutions of the trigonometricequation sec θ=2√3 are |
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Answer» The principle solutions of the trigonometricequation sec θ=2√3 are |
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| 8686. |
An unbiased coin is tossed 50 times . Find the probablity of getting TAIL\:odd number of times . |
| Answer» An unbiased coin is tossed 50 times . Find the probablity of getting TAIL\:odd number of times . | |
| 8687. |
If A=ln x-1-ln x2 and if det (A) = 2, then x = ___________. |
| Answer» If and if det (A) = 2, then x = ___________. | |
| 8688. |
Let P be the point on the parabola, y2=8x, which is at a minimum distance from the centre C of the circle,x2+(y+6)2=1. Then, the equation of the circle, passing through C and having its centre at P is |
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Answer» Let P be the point on the parabola, y2=8x, which is at a minimum distance from the centre C of the circle,x2+(y+6)2=1. Then, the equation of the circle, passing through C and having its centre at P is |
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| 8689. |
Evaluate the following integrals:∫logxx+12dx |
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Answer» Evaluate the following integrals: |
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| 8690. |
What is Cos(225)°? |
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Answer» What is Cos(225)°? |
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| 8691. |
In a ΔABC, side b is equal to |
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Answer» In a ΔABC, side b is equal to |
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| 8692. |
The value of is (A) 0 (B) –1 (C) 1 (D) 3 |
| Answer» The value of is (A) 0 (B) –1 (C) 1 (D) 3 | |
| 8693. |
Let f be a one-one function with domain {x,y,z} and range {1,2,3}. It is given that only one of the three conditions given below is true and remaining two are false. f(x)=1,f(y)≠1,f(z)≠2. Then |
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Answer» Let f be a one-one function with domain {x,y,z} and range {1,2,3}. It is given that only one of the three conditions given below is true and remaining two are false. f(x)=1,f(y)≠1,f(z)≠2. Then |
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| 8694. |
Examine if Rolle’sTheorem is applicable to any of the following functions. Can you saysome thing about the converse of Rolle’s Theorem from theseexamples?(i) (ii) (iii) |
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Answer» Examine if Rolle’s
(ii) (iii) |
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| 8695. |
If the projections of the line segment AB on the coordinate axes are 2,k,4 and AB=7√2, then 2k2−√2k+1 is equal to |
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Answer» If the projections of the line segment AB on the coordinate axes are 2,k,4 and AB=7√2, then 2k2−√2k+1 is equal to |
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| 8696. |
limx→0sin24x2x4 |
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Answer» limx→0sin24x2x4 |
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| 8697. |
Show by the Principle of Mathematical induction that the sum Sn of then terms of the series 12+2×22+32+2×42+52+2×62+72+... is given bySn=nn+122, if n is evenn2n+12, if n is odd [NCERT EXEMPLAR] |
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Answer» Show by the Principle of Mathematical induction that the sum Sn of then terms of the series is given by [NCERT EXEMPLAR] |
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| 8698. |
Find theintervals in which the function f given by f(x)= 2x3 − 3x2 − 36x+ 7 is(a) strictlyincreasing (b) strictly decreasing |
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Answer» Find the (a) strictly |
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| 8699. |
The range of p for which the number 6 lies between the roots of x2+2(p−3)x+9=0 is |
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Answer» The range of p for which the number 6 lies between the roots of x2+2(p−3)x+9=0 is |
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| 8700. |
If z1 and z2 are two non-zero complex numbers such that |z1−z2|=||z1|−|z2|| then arg(z1)−arg(z2)= |
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Answer» If z1 and z2 are two non-zero complex numbers such that |z1−z2|=||z1|−|z2|| then arg(z1)−arg(z2)= |
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