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Q. 1) = ∈{ } w has at least as many occurrences of (110)’s as (011)’s}. Let L {w 0,1 * 2 = ∈{ } w has at least as many occurrence of (000)’s as (111)’s}. Which one of the following is TRUE?

(A) L1 is regular but not L2
(B) L2 is regular but not L1
(C) Both L1 and L2 are regular
(D) Neither L1 nor L2 are regular
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Mr. Dubey • 51.17K Points
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Q. 2) A spanning tree for a simple graph of order 24 has

(A) 12 edges
(B) 6 edges
(C) 23 edges
(D) None of above.
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Q. 3) If G is a simple connected 3-regular planar graph where every region is bounded by exactly 3 edges, then the edges of G is

(A) 3
(B) 4
(C) 6
(D) 5
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Q. 4) If G is a connected planar graph of v vertices e edges and r regions then

(A) v-e+r=2
(B) e-v+r=2
(C) v+e-r=2
(D) None of above.
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Mr. Dubey • 51.17K Points
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Q. 5) A Hamiltonian cycle in a Hamiltonian graph of order 24 has

(A) 12 edges.
(B) 24 edges
(C) 23 edges
(D) None of above.
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Q. 6) The following grammar
G = (N, T, P, S)
N = {S, A, B}
T = {a, b, c}
P : S → aSa
S → aAa
A → bB
B → bB
B → c is

(A) is type 3
(B) is type 2 but not type 3
(C) is type 1 but not type 2
(D) is type 0 but not type 1
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Mr. Dubey • 51.17K Points
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Q. 7) The following grammar
G = (N, T, P, S)
N = {S, A, B, C, D, E}
T = {a, b, c}
P : S → aAB
AB → CD
CD → CE
C → aC
C → b
bE → bc is

(A) is type 3
(B) is type 2 but not type 3
(C) is type 1 but not type 2
(D) is type 0 but not type 1
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Mr. Dubey • 51.17K Points
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Q. 8) The following grammar
G = (N, T, P, S)
N = {S, A, B, C}
T = {a, b, c}
P : S → aS
A → bB
B → cC
C → a is

(A) is type 3
(B) is type 2 but not type 3
(C) is type 1 but not type 2
(D) is type 0 but not type 1
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Mr. Dubey • 51.17K Points
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Q. 9) P, Q, R are three languages. If P & R are regular and if PQ=R, then

(A) Q has to be regular
(B) Q cannot be regular
(C) Q need not be regular
(D) Q has to be a CFL
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Q. 10) Which of the following is true with respect to Kleene’s theorem?
1 A regular language is accepted by a finite automaton.
2 Every language is accepted by a finite automaton or a turingmachine.

(A) 1 only
(B) 2 only
(C) Both 1 and 2 are true statements
(D) None is true
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