Q. Consider the language L given by

L = {2^(nk) ∣ k>0, and n is non-negative integer number}

The minimum number of states of finite automaton which accepts the language L is

View solution

Q. The number of substrings that can be formed from string given by

a d e f b g h n m p

is

View solution

Q. Consider the following two languages:

L1 = {x ∣ for some y with ∣y∣ = 2^∣x∣,xy ∈ L and L is regular language}
L2 = {x ∣ for some y such that ∣x∣ = ∣y∣, xy ∈ L and L is regular language}

Which one of the following is correct?

View solution

Q. Consider the following languages:

L1 = {a^(n+m) b^n a^m ∣ n,m ≥ 0}
L2 = {a^(n+m) b^(n+m) a^(n+m) ∣ n,m ≥ 0}

Which of the following is correct?

View solution

Q. Consider R to be any regular language and L1, L2 be any two context-free languages. Which of the following is correct?

View solution

Q. Consider the following problems:

(i) Whether a finite state automaton halts on all inputs?
(ii) Whether a given context free language is regular?
(iii) Whether a Turing machine computes the product of two numbers?

Which one of the following is correct?

View solution

Q. Which of the following problems is decidable for recursive languages (L)?

View solution

Q. Consider the following grammar G:

S → A ∣ B
A → a ∣ c
B → b ∣ c
where {S, A, B} is the set of non-terminals, {a, b, c,} is the set of terminals.

Which of the following statement(s) is/are correct?
S1: LR(1) can parse all strings that are generated using grammar G.
S2: LL(1) can parse all strings that are generated using grammar G.

View solution

Q. The grammar S → (S) ∣ SS ∣ ϵ is not suitable for predictive parsing because the grammar is

View solution

Q. Two finite state machines are said to be equivalent if they:

View solution

Q. A pushdown automata behaves like a Turing machine when the number of auxiliary memory is:

View solution

Q. Pushdown automata can recognize language generated by ................

View solution

Q. To obtain a string of n Terminals from a given Chomsky normal form grammar, the number of productions to be used is:

View solution

Q. Consider the following two Grammars:

G1 : S → SbS | a
G2 : S → aB | ab, A→GAB | a, B→ABb | b

Which of the following option is correct?

View solution

Q. Context sensitive language can be recognized by a:

View solution

Q. The set A={ 0^n 1^n 2^n | n=1, 2, 3, ......... } is an example of a grammar that is:

View solution

Q. A bottom-up parser generates:

View solution

Q. Consider the following statements:

S1 : There exists no algorithm for deciding if any two Turing machines M1 and M2 accept the same language.
S2 : The problem of determining whether a Turing machine halts on any input is undecidable.

Which of the following options is correct?

View solution

Q. Which of the following regular expressions, each describing a language of binary numbers (MSB to LSB) that represents non-negative decimal values, does not include even values? (Where {+, *} are quantification characters.)

View solution

Q. Which of the following statements is/ are TRUE?

(a) The grammar S → SS a is ambiguous. (Where S is the start symbol)
(b) The grammar S → 0S1 | 01S | ϵ is ambiguous. (The special symbol ϵ represents the empty string) (Where S is the start symbol)
(c) The grammar (Where S is the start symbol)
S → T/U
T → x S y | xy | ϵ
U → yT
generates a language consisting of the string yxxyy.

View solution