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if Sr=|{:(2r,x,n(n+1)),(6r^2 -1 ,y,n^2(2...

if `S_r`=`|{:(2r,x,n(n+1)),(6r^2 -1 ,y,n^2(2n+3)),(4r^2 - 2nr,z,n^3 (n+1)):}|` . Then the value of is independent of

A

x only

B

y only

C

n only

D

x,y,z and n

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2018-MULTIPLE CHOICE QUESTIONS
  1. If |(-1,7,0),(2,1,-3),(3,4,1)|=A. Then |(13,-11,5),(-7,-1,25),(-21,-3,...

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  2. If a(r)= (cos 2r pi + i sin 2r pi)^(1/9). Then the value of |(a(1),a(2...

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  3. if Sr=|{:(2r,x,n(n+1)),(6r^2 -1 ,y,n^2(2n+3)),(4r^2 - 2nr,z,n^3 (n+1))...

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  4. If the following three linear equations have a non-trivial solution, t...

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  5. On In a relation rho is defined by x rho y if and only if x-y is zero ...

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  6. On the set R of real numbers, the relation rho is defined by x rho y, ...

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  7. If f: R rarr R be defined by f(x)= e^(x) and g: R rarr R be defined by...

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  8. In order to get a head at least once with probility ge 0.9. The minimu...

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  9. A student appears for test I, II and III. The student is successful if...

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  10. If sin 6 theta + sin 4theta + sin 2theta= 0, then general value of the...

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  11. If 0 le A le (pi)/(4), then tan^(-1) ((1)/(2) tan 2A) + tan^(-1) (cot ...

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  12. Without changing the direction of the axes, the origin is transferred ...

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  13. The angle between a pair of tangents drawn from a point P to the circl...

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  14. The point Q is the image of the point P(1,5) about the line y=x and R ...

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  15. The angular points of a triangle are A(-1, -7), B(5, 1) and C(1, 4). T...

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  16. If one of the diameters f the circle, given by the equation x^(2)+y^(2...

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  17. A chord AB is drawn from the point A(0, 3) on the circle x^(2)+4x+(y-3...

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  18. Let the occentricity of the hyperbola (x^(2))/(a^(2))-(y^(2))/(b^(2))=...

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  19. Let A. B be two distinct points on the parabola y^(2)=4x. If the axis ...

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  20. Let P(a t^(2), 2 a t), Q, R (a r^(2).2 ar) be three points on a parabo...

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