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For any two sets A and B, A-(A-B) equals...

For any two sets A and B, A-(A-B) equals

A

B

B

A-B

C

`AnnB`

D

`A^(n)nnB^(c)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-MULTIPLE CHOICE QUESTIONS
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  4. The line y=2t^(2) intersects the ellipse (x^(2))/(9)+(y^(2))/(4)=1 in ...

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  5. General solutio of sin x+cos x=min(a in R) {1,a^(2)-4a+6} is

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  6. If A and B ar square matrices of the same order and AB=3I, =then A^(-...

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  8. For any two sets A and B, A-(A-B) equals

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  9. If a=2sqrt2,b=6,A=45^(@) then

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  12. int(dx)/(sinx+sqrt3cosx)

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  13. The value of (1+cospi//6)(1+cospi//3)(1+cos2pi//3)(1+cos7pi//6) is

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  14. If P=(1)/(2)sin^(2)theta+(1)/(3)cos^(2)theta then

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  15. int(dx)/(sinx+cosx) equals

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  17. The value of int(0)^(prop)(dx)/((x^(2)+4)(x^(2)+9)) is

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  18. If I(1)int(0)^(pi//4)sin^(2)xdx and I(2)=int(0)^(pi//4)cos^(2)xdx, the...

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  19. The second order derivative of a sin’t with respect to a cos^(3)t at ...

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  20. The smallest value of costheta+12 is

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