Given: ∑= {a, b}L= {xϵ∑*|x is a string combination}∑4 represents which among the following?ans.{aa, ab, ba, bb}{aaaa, abab, ε, abaa, aabb}{aaa, aab, aba, bbb}All of the mentioned

Given: ∑= {a, b}L= {xϵ∑*|x is a string combination}∑4 represents

Write the Boolean expression of the combination logic.

An __________ signifies a combination of numbers, variables, and operation symbols.

or each of the following languages over the alphabet Σ = {a, b, c} specified by the regular expressions (a)–(c),provide two strings in Σ∗ that are members and two strings in Σ∗ that are not members of the language (fourstrings each).(a) ab + a(b) ((bc)∗ + b)a(c) (a + ab + abc)∗(b + c)

In the following question(s), symbols @, x , #, * and % are used with different meanings as follows:'A x B' means 'A is not smaller than B'.'A # B' means 'A is neither smaller than nor equal to B'.'A % B' means 'A is neither smaller than nor greater than B'.'A * B' means ' means 'A is not greater than B'.'A @ B' means 'A is neither greater than nor equal to B'.Now assuming in the following question the given statements to be true, find which of the given conclusions given below them is/are definitely true and give your answer accordingly.Statements:I. K % NII. N # TIII. R * TConclusions:I. K @ TII. T # N  Ops:   A. Both conclusion I and conclusion II follow.    B. Only conclusion I follows.    C. Neither conclusion I nor conclusion II follows.    D. Only conclusion II follows.