CS402-Midterm
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In TG there may exist no paths for certain string.
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S = {baa, ab}, then S* will not contain
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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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In FA final state represent by _________sign
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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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The length of output string in case of _________ is one more than the length of corresponding input string.
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Then initial state of FA3 will consist of
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In which of the following language Rev(s)=s
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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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If in an NFA, ^ is allowed to be a label of an edge then that NFA is called _________.
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One language can be represented by more than one RE” this statement is____
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In GTG’s there may exist no path for a certain string.
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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 ______________.
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The clouser FA*(star on an FA ) always accept ______string
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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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a*b* = (ab)* this expression is __________
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TG can have more than one initial state.
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Alphabet S = {a,bc,cc} has _______ number of letters.
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If r1 and r2 are regular expressions then which of the following is not regular expression.
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GTG can have _______________ final state.
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If FA1 accepts no string and FA2 accepts many strings, then FA1 + FA2 will be equal to
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If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________
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In FA one enter in specific stat but there is no way to leave it then state is called
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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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(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
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Languages generated by kleene star are always ______________.
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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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In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
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TG can more then one initial state
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If a language is expressed through TG, then that language will have its RE.
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Which of the following is not a word of language EQUAL?
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FA1 corresponds to r*, then FA1 must accept _______________ string.
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If a language can be expressed through FA, then it can also be expressed through TG.
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Which statement is true?
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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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One language can represents more than one RE.
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Using tree structure final state represent by
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In TG, there may be a transition for null string.
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If an alphabet has n number of letter, then number of strings of length m will be
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Length of strings, generated by infinite language is_______
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S= {a,bc,cc} has the latters
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If S = {aa, bb}, then S* will not contain..
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If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by
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