CS402-Midterm
1 / 50
Alphabet S = {a,bc,cc} has _______ number of letters.
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In TG there may exist no paths for certain string.
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If S = {aa, bb}, then S* will not contain..
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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
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Every FA should be __________
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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
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Then initial state of FA3 will consist of
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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
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S = {baa, ab}, then S* will not contain
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Two machines are said to be equivalent if they print the same output string when the different input string is run on them
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S={a,bb,bab,baabb} set of strings then S* will not have
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In GTG’s there may exist no path for a certain string.
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a (a + b)* is the RE of language defined over S = {a, b} having at least one a
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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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If in an NFA, ^ is allowed to be a label of an edge then that NFA is called _________.
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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
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One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram
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TG is always deterministic.
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(a + b)*b is RE for the language defined over S={a,b} having words not ending in a
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In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
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One language can be represented by more than one RE” this statement is____
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S= {a,bc,cc} has the latters
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FA1 corresponds to r*, then FA1 must accept _______________ string.
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In FA final state represent by _________sign
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GTG can have _______________ final state.
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If a language can be expressed through FA, then it can also be expressed through TG.
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28 / 50
“Every Infinite language is regular” this statement is
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If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by
30 / 50
If S = {ab, bb}, then S* will not contain
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32 / 50
The length of output string in case of _________ is one more than the length of corresponding input string.
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If a language is expressed through TG, then that language will have its RE.
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a*b* = (ab)* this expression is __________
35 / 50
Which of the following is not a word of language EQUAL?
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“One language can be expressed by more than one NFA”. This statement is ______________.
37 / 50
Languages generated by kleene star are always ______________.
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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
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40 / 50
TG can have more than one initial state.
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42 / 50
One language can represents more than one RE.
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44 / 50
If an alphabet has n number of letter, then number of strings of length m will be
45 / 50
RE for the language defined over Σ={a,b} having words starting with a is____
46 / 50
In TG there may exist more than one path for certain string.
47 / 50
In TG, there may be a transition for null string.
48 / 50
49 / 50
(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
50 / 50
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