CS402-Midterm
1 / 50
If S = {aa, bb}, then S* will not contain..
2 / 50
In FA final state represent by _________sign
3 / 50
Alphabet S = {a,bc,cc} has _______ number of letters.
4 / 50
In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
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The _______ machine helps in building a machine that can perform the addition of binary numbers.
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Which statement is true?
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TG is always deterministic.
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GTG can have _______________ final state.
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(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
10 / 50
“One language can be expressed by more than one NFA”. This statement is ______________.
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If a language is expressed through TG, then that language will have its RE.
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In TG there may exist no paths for certain string.
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Σ={a,Aa,Abb}, then string aAaAbbAa has ________ length.
14 / 50
Languages generated by kleene star are always ______________.
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TG can have more than one initial state.
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17 / 50
Let S = {aa, bb} be a set of strings then s* will have
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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 ______________.
19 / 50
One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram
20 / 50
In which of the following language Rev(s)=s
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One language can be represented by more than one RE” this statement is____
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“Every Infinite language is regular” this statement is
23 / 50
In TG there may exist more than one path for certain string.
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In FA, if one enters in a specific state but there is no way to leave it, then that specific state is called
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FA1 corresponds to r*, then FA1 must accept _______________ string.
26 / 50
PALINDROME can be defined by more than one regular language
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28 / 50
Every FA should be __________
29 / 50
If in an NFA, ^ is allowed to be a label of an edge then that NFA is called _________.
30 / 50
(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
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32 / 50
S = {baa, ab}, then S* will not contain
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S= {a,bc,cc} has the latters
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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
35 / 50
Length of strings, generated by infinite language is_______
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If FA1 accepts no string and FA2 accepts many strings, then FA1 + FA2 will be equal to
37 / 50
FA1 and FA2 are two FA’s representing two languages. Then FA3, which is sum of FA1 and FA2, will accept the strings which are
38 / 50
In GTG, if a state has more than one incoming transitions from a state. Then all those incoming transitions can be reduced to one transition using _____________ sign
39 / 50
If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________
40 / 50
If r1 and r2 are regular expressions then which of the following is not regular expression.
41 / 50
According to 3rd part of the Kleene’s theorem, If a language can be accepted by an RE then it can be accepted by a _________ as well
42 / 50
(a + b)*b is RE for the language defined over S={a,b} having words not ending in a
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44 / 50
If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by
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46 / 50
One FA has n states and m letters in the alphabet. Then FA will have _____ number of transitions in the diagram.
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48 / 50
If an alphabet has n number of letter, then number of strings of length m will be
49 / 50
Then initial state of FA3 will consist of
50 / 50
In TG, there may be a transition for null string.
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