GATE CSE
First time here? Checkout the FAQ!
x
0 votes
46 views
asked in Mathematical Logic by Active (1.9k points)   | 46 views

1 Answer

+2 votes
Best answer
Cardinality of $\phi = 0$ because the set contains 0 elements.

Cardinality of $\{ \phi \} = 1$ , because the set contains one element (the element is empty set).

Cardinality of $\{ \{\phi\} \} = 1$, because the set cotains one element (the element is the set containing the empty set).
answered by Loyal (3.1k points)  
selected by

Related questions

0 votes
1 answer
1
+2 votes
1 answer
2
+1 vote
2 answers
3
asked in Theory of Computation by shilajit (229 points)   | 142 views
Top Users Jan 2017
  1. Debashish Deka

    9716 Points

  2. sudsho

    5560 Points

  3. Bikram

    5290 Points

  4. Habibkhan

    4920 Points

  5. Vijay Thakur

    4498 Points

  6. Arjun

    4418 Points

  7. saurabh rai

    4236 Points

  8. Sushant Gokhale

    4230 Points

  9. Kapil

    3848 Points

  10. santhoshdevulapally

    3808 Points

Monthly Topper: Rs. 500 gift card

19,449 questions
24,228 answers
53,958 comments
20,373 users