CS402-Midterm
1 / 50
In GTG’s there may exist no path for a certain string.
2 / 50
If S = {aa, bb}, then S* will not contain..
3 / 50
TG can have more than one initial state.
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FA1 corresponds to r*, then FA1 must accept _______________ string.
5 / 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
7 / 50
“Every Infinite language is regular” this statement is
8 / 50
If in an NFA, ^ is allowed to be a label of an edge then that NFA is called _________.
9 / 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
10 / 50
Let S = {aa, bb} be a set of strings then s* will have
11 / 50
a (a + b)* is the RE of language defined over S = {a, b} having at least one a
12 / 50
Every FA should be __________
13 / 50
In FA one enter in specific stat but there is no way to leave it then state is called
14 / 50
(a + b)* a is RE for the language defined over S={a,b} having words not ending in b
15 / 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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One language can be represented by more than one RE” this statement is____
17 / 50
If an alphabet has n number of letter, then number of strings of length m will be
18 / 50
Which statement is true?
19 / 50
Which of the following is not a word of language EQUAL?
20 / 50
Alphabet S = {a,bc,cc} has _______ number of letters.
21 / 50
RE for the language defined over Σ={a,b} having words starting with a is____
22 / 50
In which of the following language Rev(s)=s
23 / 50
If a language can be expressed through FA, then it can also be expressed through TG.
24 / 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 ______________.
25 / 50
a*b* = (ab)* this expression is __________
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27 / 50
In TG there may exist no paths for certain string.
28 / 50
One FA has n states and m letters in the alphabet. Then FA will have _____ number of transitions in the diagram.
29 / 50
“Every finite language can be expressed by FA”. This statement is __________.
30 / 50
31 / 50
Then initial state of FA3 will consist of
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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
33 / 50
If a language is expressed through TG, then that language will have its RE.
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
35 / 50
Using tree structure final state represent by
36 / 50
If S = {ab, bb}, then S* will not contain
37 / 50
(a + b)*b is RE for the language defined over S={a,b} having words not ending in a
38 / 50
TG can more then one initial state
39 / 50
40 / 50
In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
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In FA final state represent by _________sign
42 / 50
Length of strings, generated by infinite language is_______
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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 language can be expressed by more than one NFA”. This statement is ______________.
47 / 50
The length of output string in case of _________ is one more than the length of corresponding input string.
48 / 50
49 / 50
The _______ machine helps in building a machine that can perform the addition of binary numbers.
50 / 50
If a language has RE, then that language can be expressed through TG.
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