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In a town of 10000 families, it was foun...

In a town of 10000 families, it was found that 40% families buy newspaper A, 20% families buy newspaper B, 10 % families buy newspaper C, 5% families buy A and B, 3% buy B and C and 4 % buy A and C. If 2% families buy all the three newspaper. Find the number of families which buy none of A , B and C.

A

4000

B

3300

C

4200

D

5000

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A
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OBJECTIVE RD SHARMA-SETS-Exercise
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  2. In a town of 10,000 families it was found that 40% family buy newspape...

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  3. In a town of 10000 families, it was found that 40% families buy ne...

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  4. Consider the set A of all matrices of order 3 xx 3 with entries 0 or 1...

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  5. if A and B are two sets , then A cap (A cup B) equals

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  6. if n(A)=n, then P(A) has

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  7. if A ={phi ,{phi}}, then the power set of A is

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  8. Let A and B have 3 and 6 elements respectively , what can be the...

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  9. Two finite sets have m and n elements . The total number of subs...

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  10. if X and Y are two sets , then X cap (Y cup X)'equals

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  11. Let A= {x: is a multiple of 3 } and B= { x:x is a multiple of 5}...

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  12. Let A ={1,2,3},B={3,4},C={4,5,6}.thenAcup (B cap C)is

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  13. Let A and B be two non-empty subsets of a set X such that A is ...

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  14. Let U be the universal set for sets A and B such that n(A) =200 ...

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  15. Out of 800 boys in a school, 224 played cricket, 240 played hockey and...

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  16. From 50 students taking examinations in mathematics, physics and chemi...

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  17. Let Z be the set of all integers and A={(a,b):a^(2)+3b^(2)=28 ...

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  18. In a class of 35 students , 17 have taken Mathematics , 10 have ta...

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  19. if A={(x,y):y=(4)/(x),xne0}and B= {(x,y):x^(2)+y^(2)=8,x,yin R},t...

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  20. if A={x:x is multiple of 4} and B= {x:x is a multiple of 6}, t...

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