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If A= phi then how many elements are in ...

If `A= phi` then how many elements are in `n[P[P(phi)]]`?

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The correct Answer is:
`= 4`
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KUMAR PRAKASHAN-SETS-PRACTICE WORK
  1. Write down all the subsets of the following sets : { phi }

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  2. Write down all the subsets of the following sets {1,2,3}

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  3. If A= phi then how many elements are in n[P[P(phi)]]?

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  4. Write the following as interval. {x : x in R, 5 le x le 12}

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  5. Write the following as interval. {x : x in R, 0 lt x le 8}

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  6. Write the following as interval. {x : x in R, -2 lt x lt 5}

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  7. Write the following as interval. {x : x in R, 4 le x lt 16}

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  8. Write the following interval in set builder form. (-7, 1)

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  9. Write the following interval in set builder form. (0, 10)

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  10. Write the following interval in set builder form. (1, 18)

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  11. Write the following interval in set builder form. (0, 8)

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  12. What universal set would you propose for each of the following : The...

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  13. What universal set would you propose for each of the following : The...

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  14. What universal set would you propose for each of the following : The...

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  15. Find the union of each of the following pairs of sets. A= {2, 4, 6, ...

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  16. Find the union of each of the following pairs of sets. A= {x : x = 2...

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  17. Find the union of each of the following pairs of sets. A= {1, 2, 3, ...

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

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

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

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