# Which of the following problems are decidable? 1) Does a given program ever produce an output? 2) If L is a context-free language, then, is also context-free? 3) If L is a regular language, then, is also regular? 4) If L is a recursive language, then, is also recursive

#### Comments and Answers (2)

**Rashmi** * *

how did the answer came

**Archana** * *

please anyone explain this answer

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