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.
| 10002. |
The roots of x^(4) - 12x^(3) + 34x^(2) - 12x + 1 = 0are |
| Answer» Answer :2 | |
| 10003. |
Solve the following linear programming problems graphically : Minimise : Z = 3x + 5y subject to constraints -2x+y le 4, x+y ge 3, x-2y le 2, x, y ge 0. |
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| 10004. |
Which scatterplot shows a nonlinear positive association ? (Note : A positive association between two variables is one in which higher values of one variable correspond to higher values of the other variable.) |
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| 10005. |
Which one of the following statements can be informed from the table ? |
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Answer» I only |
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| 10006. |
If int_(-(1)/(2))^(1/2)cosx.log((1+x)/(1-x))dx=k.log2, then k = |
| Answer» ANSWER :A | |
| 10007. |
If P(A)=2/5,P(B)1/3,P(AnnB)=1/5"then find"P(barA|barB). |
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| 10008. |
If the circles (x-a)^(2)+(y-b)^(2)=r^(2), (x-b)^(2)+(y-a)^(2)=r^(2) touch each other then the point of contact is |
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Answer» `((a+b)/2,(a+b)/2)` |
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| 10009. |
If the normal at any point P of the ellipse (x^(2))/(16)+(y^(2))/(9) =1 meets the coordinate axes at M and N respectively, then |PM|: |PN| equals |
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Answer» `4:3` `4x sec theta - 3y cosec theta =7` This meets the coordinate axes at `M ((7)/(4) cos theta, 0), N (0,-(7)/(3) SIN theta)` `:. PM^(2) = (4-(7)/(4))^(2) cos^(2) theta + 9 sin^(2) theta` `= (9)/(16) (9 cos^(2) theta + 16sin^(2) theta)` `PN^(2) = 16 cos^(2) theta + (3+(7)/(3))^(2) sin theta` `= (16)/(9) (9 cos^(2) theta + 16 sin^(2) theta)` `:. PM^(2): PN^(2) = 9^(2): 16^(2)` `rArr |PM| : |PN| = 9: 16` |
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| 10010. |
Integrate the following functions e^x(1/x - 1/x^2) |
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Answer» SOLUTION :`INT e^X(1/x -1/x^2) DX` = `e^x/x+c`, F(x) = 1/x, `f^.(x) = -1/x^2` |
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| 10011. |
The normal form of the line x+y+1=0 is |
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Answer» `xcos(45^(@))+ysin(135^(@))=1/sqrt(2)` |
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| 10012. |
Match the item of list-I with those of List-II Then, which of the following is correct ? |
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Answer» `{:(A,B,C,D),(v,iv,III,II):}` |
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| 10013. |
Find the sum of all 3-digit natural numbers which contain at least one odd digit and at least one even digit |
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| 10014. |
Verify Property 2 for Delta=|{:(2,-3,5),(6,0,4),(1,5,-7):}| |
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| 10015. |
If 4-3y+7 = 0 is a tangent ot the circle repesented by x^(2) + y^(2) -6x + 4y - 12 = 0 , then find its point of contact. |
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| 10016. |
The product of lengths of perpendicular from any point on the hyperola x^(2)-y^(2)=16 to its asymptotes is |
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Answer» 2 |
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| 10017. |
If logx=z, then the value ofx^(2)(d^(2)y)/(dx^(2)) is - |
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Answer» `(d^(2)y)/(DZ^(2))` |
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| 10018. |
~p vv ~q is logically equivalent to |
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Answer» `~p RARR ~q` |
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| 10019. |
A right solid circular cylinder of given volume will have the least total surface area when |
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Answer» its HEIGHT is EQUAL to its radius |
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| 10020. |
If int(1 - tan 3x)^(2) dx = (1)/(3)[tan 3x+logf(x)] + C then f(x) is given by |
| Answer» Answer :B | |
| 10021. |
Write the component statement "57 is divisible by 2 or 3" compound statements and check whether the compound statement is true or false. |
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Answer» <P> Solution :The component statements arep: 57 is divisible by 2 q : 57 is divisible by 3 The TRUTH VALUE of the compound STATEMENT is .True.. |
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| 10022. |
Let ** be a binary operation on the set Q of rational numbers as follows : a "*" b = (ab)/(4) Find which of the binary operations are commutative and which are associative. |
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| 10023. |
Let P(n): 1+1/4+1/9 +….+(1)/(n^2) lt 2- (1)/(n), is true |
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Answer» `AA n` |
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| 10024. |
"Evaluate "Delta ={:|( 0 , sin alpha ,-cos alpha ) ,( -sin alpha , 0 , sin beta ),( cos alpha , -sin beta, 0)|:} |
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| 10025. |
underset(-pi//4)overset(pi//4)int (dx)/(1+cos 2x) is equal to |
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Answer» 1)0 |
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| 10026. |
Match the following.{:("I) "(i)^i=,"a) "ipi//2),("II) "log_ei=,"b) "ipi//2+logpi//2),("III) "log(logi)=,"c) "sqrt2),("IV "sqrti+sqrt(-i)=,e^(-pi//2)):} |
| Answer» Answer :C | |
| 10028. |
int(x^(2)+1)/(x(x^(2)-1))dx=.... |
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Answer» `"LOG"(x^(2)-1)/(x)+C` |
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| 10029. |
Evalute the following integrals intx log (1 + x) dx |
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| 10030. |
According to Newton's law of cooling, the rate of cooling of a body in air is proportional to the difference between the temperature of the body and the temperature of the surrounding air. If the air temperature is 20^(@)C and the body cools for 20 minutes from 140^(@)Cto80^(@)C, then the temperature will be 50^(@)C in |
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Answer» 30 MINUTES |
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| 10031. |
If int (4e^(x) + 6e^(-x))/(9e^(x) - 4e^(-x))dx = Ax + B log (9x^(x) - 4e^(-x) ) + Cthen |
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Answer» `A = (-19)/(36), B =(35)/(36), ` C = 0 |
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| 10033. |
If the line (x-4)/(1) = (y-2)/(1) = (z+k)/(2) lies in the plane 2x -4y + z =7 then k =........ |
| Answer» ANSWER :A | |
| 10034. |
Two consecutive numbers from 1,2,3 …., n are removed.The arithmetic mean of the remaining numbers is 105/4 . The removed numbers |
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Answer» LIE between 10 and 20 Then, the sum of the remaining numbers is n(n+1)/2-(2m+1). From given condition, `105/4=((n(n+1))/2-(2m+1))/((n-2))` or `2n^(2)-103n-8m+206`=0 Since n and m are integers, so n must be even. Let n=2k. Then, `m=(4K^(2)+103(1-k))/4` Since m is an INTEGER, then 1-k must be divisble by 4. Let k=1+4t. Then we get n=8t+2 and `m=16t^(2)-95t+1`. Now, `1lemltn` `rArr1le16t^(2)-95t+1lt8t+2` Solving, we get t=6. Hence, n=50 and m=7 Hence, the removed numbers are 7 and 8. Also, sm of all numbers is 50(50+1)/2=1275. |
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| 10035. |
Let A(0,6,6), B(6,6,0) and C(6,0,6) are three points and point D is moving on the line x+z-3=0=y. If G is centroid of DeltaABC, then minimum value of GD is |
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Answer» `SQRT((47)/2)` Let D=(a,0,3-a) `GD^(2)=(a-4)^(2)+(0-4)^(2)+(3-a-4)^(2)` `=2a^(2)-6a+33`. For minimum of `GD^(2),a=3/2` `GD_("MIN") = sqrt(2.9/4-6.3/2+33)=sqrt(57/2` |
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| 10036. |
int(dx)/((x^2-1)sqrt(x^2+1))= |
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Answer» `(1)/(2sqrt(2))log|(SQRT(1+X^2)+sqrt(2)x)/(sqrt(1+x^2)-sqrt(2)x)|+c` |
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| 10037. |
A point P is movingin a plane such that the difference of its distances from two fixedpoints in the same plane is a constant. The path traced by the point P is a/an |
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Answer» CIRCLE |
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| 10038. |
(i) What is the second term in the expansion of (1 + x)^(n)? (ii) Write the 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n). (iii) If the coefficients of 2^(nd), 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n) are in A.P, then show that n^(2) - 9n + 14 = 0. |
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| 10040. |
A new fitness class was started at a chain of fitness clubs owned by the same company. The scatter plot above shows the total number of people attending the class during the first 5 months in which the class was offered. The line of best fit is drawn. If n is the number of the month, which of the following functions could represent the equation of the graph's line of best fit? |
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Answer» `F(X)=300n+125` |
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| 10041. |
If circle x^(2)+y^(2)+2gx+2fy+c=0(c gt 0) touches both the coordinate axes and lies in the third quadrant then the length of thechord intercepted by the circle on the line x+y+sqrt (c )=0 is |
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Answer» `SQRT(2C)` |
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| 10042. |
If x, y, z arein A.P., then the value of |{:(p + 2, p+3,p+4),(p+3,p+4,p+5),(p+ 2x,p+2y,p+2z):}| equals to |
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Answer» 4a |
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| 10043. |
Find the area of quadrilateral formed by 3x ^(2) + y ^(2) - 4xy + 6x - 4y + 3=0 and x ^(2) + 4y ^(2) - 4xy + 6x + 12y + 9=0 |
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Answer» 16/3 UNITS |
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| 10044. |
If x satisfies the equation x^2-2xcostheta+1=2costheta,then the value of x^n+1//x^n is |
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Answer» `2^ncosntheta` |
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| 10045. |
What is the smallest possible natural number 'n' for which the equation x^(2)-nx + 2014=0has integer roots. |
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| 10046. |
int x^(2) sin^(2)x dx = |
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Answer» `(1)/(6) X^(3) + (1)/(2) [ (x^(2)sin 2x)/(2) + (xcos2x)/(2) - (sin2x)/(2) ] + C ` |
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| 10047. |
If a=Sigma_(n=0)^(oo) (x^(3x))/(3n)!,b=Sigma_(n=1)^(oo)(x^(3n-2))/(3n-2!) and C= Sigma_(n=1)^(oo)(x^(3n-1))/(3n-1!) then the value of a^(3)+b^(3)+C^(3)-3abc is |
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Answer» 1 |
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| 10048. |
A = ((2.1,2.5,3.7),(-2.1,5.9,3.8),(0,-2.9,-3)),B=((cosalpha,sinalpha,0),(sin alpha,cosalpha,0),(0,0,-1)) ,C=((cos alpha,sinalpha,0),(-sin alpha,cos alpha,0),(0,0,1)) thensum_(k=0)^(oo)(1)/(3^(k))tr(A(BC)^(k))=________ |
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| 10049. |
When 9th term of A.P is divided by its 2nd term then quotient is 5 and when 13th term is divided by 6thterm then quotient is 2 and Remainder is 5 then find first term of A.P. :- |
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Answer» so a+8d=5 (a+d) & a+12d=2(a+5d)+5 `rArr` a=3 |
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| 10050. |
Is the number set {0.2,-0.5,0.9,0.4} determining a probability distribution ? |
| Answer» SOLUTION :As `-0.5lt0`, the given SET does not REPRESENT a PROBABILITY distribution. | |