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Let A={phi,{phi},1,{1,phi},2}dot Which o...

Let `A={phi,{phi},1,{1,phi},2}dot` Which of the following are true? `{1}sub A` ii. `{{phi}}subA` iii. `{2,phi}subA`

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i) False
`1` is not an element of `A`.
ii) True
`{{phi}}` is a subset of set `A`.
iii) True
`{2, phi}` is a subset of `A`.
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RD SHARMA-SETS-Solved Examples And Exercises
  1. Let A={phi,{phi},1,{1,phi},2}dot Which of the following are true? phi...

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  2. Let A={phi{phi},1,{1,phi},2}dot Which of the following are true? {{2},...

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  3. Let A={phi,{phi},1,{1,phi},2}dot Which of the following are true? {1}s...

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  4. Write down all possible subset of each of the following set: {0,1}

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  5. Write down all possible subset of each of the following set: {1,{1}}

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  6. Write down all possible subset of each of the following set: {phi}

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  7. Write down all possible subset of each of the following set: {a , b , ...

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  8. Write down all possible proper subsets each of the following set: {1,2...

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  9. Write down all possible proper subsets each of the following set: {1,2...

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  10. Write down all possible proper subsets each of the following set: {1}

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  11. How many elements has P(A), if A=phi

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  12. If A={1,2,3}a n d\ B={1,3,5,7},\ t h e n\ AuuB= {1,2,3,5,7} .

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  13. If A={x : x=2n+1,\ n in Z}\ a n d\ B={x : x=2n ,\ n in Z} , then Auu...

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  14. Let A={1,2,3},\ B={4,5},\ C={6,7,8} . Then AuuBuuC={1,2,3,4,5,6,7,8}

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  15. If A={1,2,3,4,5} and\ B={1,3,9, 12} then AnnB={1,3}dot

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  16. If A={1,2,3,4,5,6,7,8}\ a n d\ B={1,3,5,6,7,8,9},\ t h e n\ A-B={2,4},...

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  17. If A={1,2,3,4,5},\ B={4,5,6,7,8},\ C={7,8,9, 10 , 11}a n d\ D={10 , 11...

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  18. If A={1,2,3,4,5},\ B={4,5,6,7,8},\ C={7,8,9, 10 , 11}a n d\ D={10 , 11...

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  19. If A={1,2,3,4,5},\ B={4,5,6,7,8},\ C={7,8,9, 10 , 11}a n d\ D={10 , 11...

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  20. If A={1,2,3,4,5},\ B={4,5,6,7,8},\ C={7,8,9, 10 , 11}a n d\ D={10 , 11...

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