# Which of the following problems are undecidable membership problem?

## Which of the following problems are undecidable membership problem?

Membership problem for type 0 (Recursively Enumerable) grammars is undecidable.

## What are undecidable problems in TM?

Undecidable Problems A problem is undecidable if there is no Turing machine which will always halt in finite amount of time to give answer as ‘yes’ or ‘no’. An undecidable problem has no algorithm to determine the answer for a given input.

**How do you know if a language is decidable or undecidable?**

A language is called Decidable or Recursive if there is a Turing machine which accepts and halts on every input string w. Every decidable language is Turing-Acceptable. A decision problem P is decidable if the language L of all yes instances to P is decidable.

### Which of the following problems is undecidable easy?

Which of the following problems is undecidable? Ambiguity problem for context free grammar is undecidable. So, option (D) is correct.

### Which of the following problems is undecidable membership problem for CFG s?

Only ambiguity problem for CFGs are undecidable.

**Is Fermat’s theorem undecidable?**

So it looks entirely possible that it is indeed undecidable. But as for proving it, that’s a different matter. The theorem isn’t directly linked to a rapidly increasing sequence, but it might be possible to link it to such a sequence .

#### What is decidable problem in computer science?

(definition) Definition: A decision problem that can be solved by an algorithm that halts on all inputs in a finite number of steps. The associated language is called a decidable language. Also known as totally decidable problem, algorithmically solvable, recursively solvable.

#### How do you tell if a language is decidable or undecidable?

**Why is the halting problem undecidable?**

The Halting Problem is Undecidable: Proof Since there are no assumptions about the type of inputs we expect, the input D to a program P could itself be a program. Compilers and editors both take programs as inputs.

## Is halting problem is undecidable?

The halting problem on Turing machines is undecidable. Conversely, the halting problem on finite state automata is easily decidable; all finite state automata halt. Thus it’s important to specify the model. The halting problem on usual computers is also decidable.

## Which of the following problems is undecidable 1 point?

**Is equivalence of two programs undecidable?**

Yes, it is undecidable.