CS402-Midterm
1 / 50
One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram
2 / 50
In TG there may exist more than one path for certain string.
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If S = {ab, bb}, then S* will not contain
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TG can have more than one initial state.
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S = {baa, ab}, then S* will not contain
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“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.
8 / 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
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If a language has RE, then that language can be expressed through TG.
10 / 50
In TG there may exist no paths for certain string.
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One language can represents more than one RE.
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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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If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________
14 / 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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In FA final state represent by _________sign
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GTG can have _______________ final state.
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Alphabet S = {a,bc,cc} has _______ number of letters.
18 / 50
In which of the following language Rev(s)=s
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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
20 / 50
Auto Meta mean
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One language can be represented by more than one RE” this statement is____
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23 / 50
Languages generated by kleene star are always ______________.
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In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
25 / 50
If an alphabet has n number of letter, then number of strings of length m will be
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27 / 50
28 / 50
FA1 corresponds to r*, then FA1 must accept _______________ string.
29 / 50
TG is always deterministic.
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31 / 50
In FA one enter in specific stat but there is no way to leave it then state is called
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The clouser FA*(star on an FA ) always accept ______string
33 / 50
Which statement is true?
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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 ______________.
35 / 50
If a language can be expressed through FA, then it can also be expressed through TG.
36 / 50
PALINDROME can be defined by more than one regular language
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S={a,bb,bab,baabb} set of strings then S* will not have
38 / 50
a*b* = (ab)* this expression is __________
39 / 50
RE for the language defined over Σ={a,b} having words starting with a is____
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41 / 50
If r1 and r2 are regular expressions then which of the following is not regular expression.
42 / 50
(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
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44 / 50
If in an NFA, ^ is allowed to be a label of an edge then that NFA is called _________.
45 / 50
The _______ machine helps in building a machine that can perform the addition of binary numbers.
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47 / 50
Σ={a,Aa,Abb}, then string aAaAbbAa has ________ length.
48 / 50
TG can more then one initial state
49 / 50
Let S = {aa, bb} be a set of strings then s* will have
50 / 50
If FA1 accepts no string and FA2 accepts many strings, then FA1 + FA2 will be equal to
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