Let S and T be language over ={a,b} represented by the regular expressions (a+b*)* and (a+b)*, respectively. Which of the following is true?

Let S and T be language over ={a,b} represented by the regular expressions (a+b*)* and (a+b)*, respectively. Which of the following is true?
S=T
Well Done.
ScT (S is a subset of T)
TcS (T is a subset of S)
SnT=Ø

Assume the R is a relation on a set A, aRb is partially ordered such that a and b are _____________

Assume the R is a relation on a set A, aRb is partially ordered such that a and b are _____________
transitive and reflexive
Well Done. A partially ordered relation refers to one which is Reflexive, Transitive and Antisymmetric.
symmetric
reflexive
transitive

Which of the following is a not a part of 5-tuple finite automata?

Which of the following is a not a part of 5-tuple finite automata?
Output Alphabet
Well Done. A FA can be represented as FA= (Q, ∑, δ, q0, F) where Q=Finite Set of States, ∑=Finite Input Alphabet, δ=Transition Function, q0=Initial State, F=Final/Acceptance State).
Input alphabet
Transition function
Initial State

Let L denotes the language generated by the grammar S – OSO/00. Which of the following is true?

Let L denotes the language generated by the grammar S – OSO/00. Which of the following is true?
L is regular but not O
Well Done. Please note that grammar itself is not regular but language L is regular as L can be represented using a regular grammar, for example S -> S00/00.
L = O
L is context free but not regular
L is not context free

Given: ∑= {a, b}
L= {xϵ∑*|x is a string combination}
∑4 represents which among the following?

Given: ∑= {a, b}
L= {xϵ∑*|x is a string combination}
∑4 represents which among the following?
{aaaa, abab, ε, abaa, aabb}
Well Done. ∑* represents any combination of the given set while ∑x represents the set of combinations with length x where x ϵ I.
{aa, ab, ba, bb}
{aaa, aab, aba, bbb}
All Options are Correct