Assignment:
Q1. Determine the following and show your work
A'U B'
Q2. Write a statement that makes the following set true
A = {q, r, s, t, u}
Q3. Can the word "RATES" be played from the letters A, E, O, N, R, S, T as the first move in a Scrabble game? Explain your answer.
Q4. Express the following in roster form: Set M is the set of natural numbers between eighteen and twenty-five.
Provide complete and step by step solution for the question and show calculations and use formulas.