CS402-Midterm
1 / 50
In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
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a*b* = (ab)* this expression is __________
3 / 50
Let S = {aa, bb} be a set of strings then s* will have
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TG can more then one initial state
5 / 50
Languages generated by kleene star are always ______________.
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a (a + b)* is the RE of language defined over S = {a, b} having at least one a
7 / 50
The clouser FA*(star on an FA ) always accept ______string
8 / 50
In TG there may exist more than one path for certain string.
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10 / 50
One language can represents more than one RE.
11 / 50
If an alphabet has n number of letter, then number of strings of length m will be
12 / 50
In TG there may exist no paths for certain string.
13 / 50
Which statement is true?
14 / 50
In which of the following language Rev(s)=s
15 / 50
In FA one enter in specific stat but there is no way to leave it then state is called
16 / 50
One language can be represented by more than one RE” this statement is____
17 / 50
If S = {aa, bb}, then S* will not contain..
18 / 50
19 / 50
RE for the language defined over Σ={a,b} having words starting with a is____
20 / 50
a(a+b)*a+b(a+b)*b is RE for the language defined over S={a,b} having words beginning and ending with same letters
21 / 50
In NFA, there may be more than one transition for certain letters and there may not be any transition for certain letters. This statement is ______________.
22 / 50
If FA1 accepts no string and FA2 accepts many strings, then FA1 + FA2 will be equal to
23 / 50
If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________
24 / 50
The _______ machine helps in building a machine that can perform the addition of binary numbers.
25 / 50
TG is always deterministic.
26 / 50
If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by
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28 / 50
In FA final state represent by _________sign
29 / 50
In TG, there may be a transition for null string.
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S = {baa, ab}, then S* will not contain
31 / 50
32 / 50
FA1 corresponds to r*, then FA1 must accept _______________ string.
33 / 50
S= {a,bc,cc} has the latters
34 / 50
(a+b)*a(a+b)*b(a+b)* is the RE of language defined over S={a,b} having at least one a and one b
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36 / 50
“One language can be expressed by more than one NFA”. This statement is ______________.
37 / 50
Σ={a,Aa,Abb}, then string aAaAbbAa has ________ length.
38 / 50
Every FA should be __________
39 / 50
One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram
40 / 50
(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
41 / 50
Auto Meta mean
42 / 50
One FA has n states and m letters in the alphabet. Then FA will have _____ number of transitions in the diagram.
43 / 50
Alphabet S = {a,bc,cc} has _______ number of letters.
44 / 50
Using tree structure final state represent by
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46 / 50
If a language has RE, then that language can be expressed through TG.
47 / 50
In GTG’s there may exist no path for a certain string.
48 / 50
49 / 50
Length of strings, generated by infinite language is_______
50 / 50
S={a,bb,bab,baabb} set of strings then S* will not have
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