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If X and Y are two sets such that X ∪ Y ...

If X and Y are two sets such that `X ∪ Y` has 18 elements, X has 8 elements and Y has 15 elements , how many elements does `X ∩ Y` have?

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OSWAAL PUBLICATION-SOLVED PAPER 2020-1-EXERCISE
  1. Write the negation of the statement sqrt 2 is a complex number.

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  2. If 2/11is the probability of an event 'A'.What is the probability of t...

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  3. If X and Y are two sets such that X ∪ Y has 18 elements, X has 8 eleme...

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  4. If A={1,2,3},B={3,4} and C={4,5,6},Find A xx (BnnC)

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  5. The range of the function f(x) = sqrt(9-x^(2))

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  6. Find the radius of the circle in which a central angle of 60^(@) inter...

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  7. Prove that sin 2x=(2 tan x)/(1+tan^(2)x)

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  8. Solve each of the following equations. 1. Solve x^(2) +x+1=0

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  9. The marks obtained by a student of class XI in the first and second te...

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  10. Find the distance of the point (3,-5) from the line 3x -4y -26 =0

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  11. Find the equation of the line parallel to the line 3x -4y + 2=0 and pa...

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  12. Find the co-ordinates of the point P which divides the line segment jo...

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  13. Write the contrapositive and converse of the following statements. I...

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  14. Write the mean of the given data : 6,7,10,12,13,4,8,12 ?

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  15. A letter is chosen at random from the word "ASSASSINATION" . Find the ...

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  16. A letter is chosen at random from the word 'ASSASSINATION' Find the pr...

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  17. In a survey of 400 students in a school, 100 were listed as taking app...

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  18. Let f(x)=x^2 and g(x)=2x+1be two real valued functions,Find (i)(f+g)(x...

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  19. Let f(x)=x^2 and g(x)=2x+1be two real valued functions,Find(ii) (f-g)(...

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  20. Let f(x)=x^2" and "g(x)=2x+1 be two real values functions, find (fg)...

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