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A class has 175 students. The following ...

A class has 175 students. The following data shows the number of students obtaining one or more subjects. Mathematics 100, Physics 70, Chemistry 40, Mathematics and Physics 30, Mathematics and Chemistry 28, Physics and Chemistry 23, Mathematics, Physics and Chemistry 18. How many students have offered Mathematics alone (a) 35 (c) 60 (b) 48 (d) 22

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RD SHARMA ENGLISH-SETS-All Questions
  1. Let A={3,6, 12 , 15 , 18 , 21},\ B={4,8, 12 , 16 , 20},\ C={2,4,6,8, 1...

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  2. Let A={3,6, 12 , 15 , 18 , 21},\ B={4,8, 12 , 16 , 20},\ C={2,4,6,8, 1...

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  3. A class has 175 students. The following data shows the number of stude...

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  4. Two finite sets A and B have m and n element respectively. If the tota...

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  5. For any two sets A and B, Ann(AuuB ') is equal to a. A b. B c. varphi ...

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  6. The set (A uu B')' uu(B nn C) is equal to

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  7. If a in N such that a N={a x : x in N} . Describe the set 3Nnn7Ndot

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  8. For any natural number a,we define aN={ax:x in N}. If b,c,d in N such ...

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  9. Find the smallest set A such that Auu{1,2}={1,2,3,5,9}dot

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  10. Let A={1,2,4,5}\ B={2,3,5,6}C={4,5,6,7} . Verify the following identit...

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  11. Let A={1,2,4,5}\ B={2,3,5,6}C={4,5,6,7} . Verify the following identit...

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  12. Let A={1,2,4,5}\ B={2,3,5,6}C={4,5,6,7} . Verify the following identit...

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  13. Let A={1,2,4,5}\ B={2,3,5,6}C={4,5,6,7} . Verify the following identit...

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  14. Let A={1,2,4,5}\ B={2,3,5,6}C={4,5,6,7} . Verify the following identit...

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  15. For any two sets A\ a n d\ B ,\ prove that BsubAuuB

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  16. For any two sets A\ a n d\ B ,\ prove that AnnBsubA

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  17. For any two sets A\ a n d\ B ,\ prove that AsubB=>AnnB=A

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  18. Show that A nn B=A nn C need not imply B=C

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  19. Show that if A subB , then C" "-" "BsubC" "-" "A .

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  20. Prove that Auu (Ann B)= A

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