Create an NPDA for the following language: On summation  = {0.1} Language 1 (L1) every string in the language begin and end with 1 Language 2 (L2) all strings in the language begin with 001 The union of L1 and L2

Show the language L = {a"b*c": n > 0, k > 0} is not regular.

Q No. 3: Grammar G1 = ( N = { E, T, F, I, D}, T = { +, *, (, ), 0-9}, S = {E} and P is the set of productions: E E +T | T T T * F | F E) | I DI | D F I D + 0|1|2|3|4 |5 | 6 | 7 | 8 |9 For the string w = (9*(9+9)+999), find- 1. Leftmost derivation 2. Rightmost derivation 3. Parse Tree

C++ Consider the language that the following grammar defines: <S> =  c | <W> | c<S> <W> = abb|a<W>bb Write all strings that are in this language and that contain seven or fewer characters. If the answer includes multiple strings, you must enter the answers in alphabetical order. A. In alphabetic order, what are the two strings in this language that are 3 characters in length? B. In alphabetic order, what are the two strings in this language that are 4 characters in length? C. In alphabetic order, what are the two strings in this language that are 5 characters in length?