CS402-Midterm
1 / 50
Which of the following is not a word of language EQUAL?
2 / 50
TG can more then one initial 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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Then initial state of FA3 will consist of
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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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TG can have more than one initial state.
7 / 50
Languages generated by kleene star are always ______________.
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If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by
9 / 50
S= {a,bc,cc} has the latters
10 / 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
11 / 50
If S = {aa, bb}, then S* will not contain..
12 / 50
If S = {ab, bb}, then S* will not contain
13 / 50
If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________
14 / 50
In FA final state represent by _________sign
15 / 50
In TG, there may be a transition for null string.
16 / 50
17 / 50
If an alphabet has n number of letter, then number of strings of length m will be
18 / 50
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
19 / 50
In TG there may exist more than one path for certain string.
20 / 50
Alphabet S = {a,bc,cc} has _______ number of letters.
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One language can represents more than one RE.
22 / 50
In GTG’s there may exist no path for a certain string.
23 / 50
In which of the following language Rev(s)=s
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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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26 / 50
27 / 50
The _______ machine helps in building a machine that can perform the addition of binary numbers.
28 / 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 ______________.
29 / 50
Which statement is true?
30 / 50
If a language is expressed through TG, then that language will have its RE.
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GTG can have _______________ final state.
32 / 50
“Every finite language can be expressed by FA”. This statement is __________.
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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
34 / 50
Every FA should be __________
35 / 50
One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram
36 / 50
RE for the language defined over Σ={a,b} having words starting with a is____
37 / 50
In FA, if one enters in a specific state but there is no way to leave it, then that specific state is called
38 / 50
Length of strings, generated by infinite language is_______
39 / 50
Two machines are said to be equivalent if they print the same output string when the different input string is run on them
40 / 50
In TG there may exist no paths for certain string.
41 / 50
a (a + b)* is the RE of language defined over S = {a, b} having at least one a
42 / 50
Let S = {aa, bb} be a set of strings then s* will have
43 / 50
FA1 corresponds to r*, then FA1 must accept _______________ string.
44 / 50
One language can be represented by more than one RE” this statement is____
45 / 50
In drawing FA3 (which is equal to FA1 + FA2), a state will be declared final if
46 / 50
PALINDROME can be defined by more than one regular language
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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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49 / 50
50 / 50
“One language can be expressed by more than one NFA”. This statement is ______________.
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