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In a class of 175 students the following...

In a class of 175 students the following data shows the number of students opting one or more subjects Mathematics 100, physics 70, chemistry 28, physics and Chemistry 23, mathematics physics and chemistry 18. how many students have offered mathematics alone ?

A

35

B

48

C

60

D

22

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-SETS-Exercise
  1. Let Z be the set of all integers and A={(a,b):a^(2)+3b^(2)=28 ...

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

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

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  5. if A={(x,y):x^(2)+y^(2)=4,x,y in R } and B={(x,y): x^(2)+y^(2)= 9,x,...

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  6. if A={(x,y):x^(2)+y^(2)=4, x,y in R }and B={(x,y):Y=|x|, x , y in ...

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  7. if A={theta: cos theta gt -(1)/(2),0 le theta le pi }and B={theta...

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  8. in rule method the null set is resresented by

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  9. if A and B are two given sets , then A cap (A capB) ^( C) is equal ...

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  10. Let n(Li) = 700 ,n(A) = 200,n( B) =300 and n(A cap B)=100 then n(A^( ...

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

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  12. For any three sets A1,A2, A3, let B1=A1, B2 = A2-A1 and B3 = A3-(A1uuA...

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  13. In a city 20% of the population travels by car, 50% by bus and 10% tra...

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  14. An investigator interviewed 100 students to determine the performan...

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  15. two finite sets have m and n elements . The total number of subs...

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  16. In a class of 175 students the following data shows the number of stu...

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  17. if A={1,2,3,4,5},B={2,4,6}and C={3,4,6}, then (Acup B) cap C is

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  18. In a class of 45 student, 22 can speak hindi and 12 can speck E...

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  19. In a certain town 25% families own a cellphone, 15% families own a sco...

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  20. Let A be a set represented by the squares of natural numbers ...

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