please answer correctly for each question. if you aren't sure it's the right answer for a question please skip it.

thank you. I appreciate your help.

What is the unknown language L. {,a,ab)L=(,b,a,ab,aab,abb,abab} A. L={,b,ba} B. L = (b, ba } C.L =(,b,ab} D. L =(b,ab) QUESTION 2 If L= (bb), which of the following strings is not a part of L ? bb bbb bobbbb Find the number of strings over the alphabet {a,b,c, d that satisfy the following condition Length 4 , begins with a or c and ends with b or c A. 1441=16 B. 2442=64 C. 1442=32 D. 4444=250 QUESTION 4 For the language L={anbmn>=0,m>0}, which one of the following strings is not a part of the language ? ab acb accoce acoscococosoccb Given fwo languages L={,a,b) and M={aa,N}, which of the following is the product of L and M ? {aa,a3a,baa,} (aa,asa,ban,b.,,ab) {as,a0a,baa,b} {aa,aaa,baa,b,a,) QUESTION 6 Which of the following languages is the product {anbn>=0}(cnn>m} {anbncnn>=0}{anbcnn>=0}{anbmcnn>=0,m>=0}{anbcmn>=0,m>=0}