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In a certain town, 60% of the families o...

In a certain town, 60% of the families own a car, 30% own a house and 20% own both a car and a house. If a family is randomly chosen, what is the probability that this family owns a car or a house but not both?

A

0.5

B

0.7

C

0.1

D

0.9

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2015-MULTIPLE CHOICE QUESTIONS
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  3. Let f:RtoR be a continuous function which satisfies f(x)=int(0)^(x)f(t...

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  4. The value of lim(xto2)int(2)^(x)(3t^(2))/(x-2)dt is

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  5. If cot""(2x)/(3)+tan""(x)/(3)=cosec""(kx)/(3), then the value of k is

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  6. If thetain((pi)/(2),(3pi)/(2)), then the value of sqrt(4cos^(4)theta+s...

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  7. The number of real solutions of the equation (sinx-x)(cosx-x^(2))=0 is

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  8. The value of lamda, such that the following system of equations has no...

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  9. If f(x)=|(1,x,x+1),(2x,x(x-1),(x+1)x),(3x(x-1),x(x-1)(x-2),(x+1)x(x-1)...

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  10. Which of the following is not always true?

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  11. If the four points with position vectors -2hati+hatj+hatk,hati+hatj+ha...

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  12. If sin^(-1)(x-(x^(2))/(2)+(x^(3))/(4)-(x^(4))/(8)+......)=(pi)/(6) whe...

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  13. The area of the region bounded by the curve y=x^(3), its tangent at (1...

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  14. If log(0.2)(x-1)gtlog(0.04)(x+5) then

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  15. The number of real roots of equation log(e)x+ex=0

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  16. For all real values of a(0),a(1),a(2),a(3) satisfying a(0)+(a(1))/(2)+...

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  17. Let f:RtoR be defined as f(x)={{:(0","," is irrational"),(sin|x|","," ...

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  18. If the vertex of the conic y^(2)-4y=4x-4a always lies between the stra...

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  19. Number of intersecting points of the conic 4x^(2)+9y^(2)=1 and 4x^(2)+...

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  20. The value of lamda for which the straight line (x-lamda)/(3)=(y-1)/(2+...

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