##### regular language

Let L⊆{0,1}. Which of the following is true?

1. If L is regular, all subsets of L are regular.
2. If all proper subsets of L are regular, then L is regular.
3. If all finite subsets of L are regular, then L is regular.
4. If a proper subset of L is not regular, then L is not regular.
##### 1Comment
shivani
28 Oct 2017 01:23 pm

If all finite subsets of L are regular, then L is regular. // true
but the statement regular language has got its finite subset as regular is  not true.

You can analyse these statements by taking examples.