If a language L is defined over alphabet , which of the following is a correct statement: A) Both Σ and L are finite sets B) Both and L can be finite or infinite sets C) is a finite set and L is an infinite set D) is a finite set and L can be either finite or infinite B OA OC D

You are invited to design a national identification number system for U.S. citizens. The ID number should: reflect the state, county, and city the person lives in; reflect the person’s date of birth; take into account the possibility of multiple individuals sharing identical birthday in the same city. Please also EXPLAIN your design of this ID number system with appropriate examples. Merely providing an example is not sufficient.

7. Select primes p=1009, q=1013, And find the encrypted and decrypted key using RSA algorithm.

How relevant are rules about who can and cannot enter a certain area, anyway, in the modern world? In your response, please give at least two instances where access was restricted.