 Hello and welcome to the session. In this session, we will discuss the following question and the question says, specify each of the following using description method. Part a, the set of first five multiples of two. Part b, the set of natural numbers less than 10. Part c, the set of variables in English alphabet. Before we start solving the question, let us first recall that is description method. In description method, set is represented by describing it clearly in words with embraces. This is the key idea for this question and using this key idea, we will solve the question. Let's start the solution now. In part a, we have the set of first five multiples of two. So, part a is the set of first five multiples of two. Now, we have to write the set using description method. Now, going back to the key idea, we have in description method, set is represented by describing it clearly in words with embraces. So, we have to describe the given set clearly in words with embraces. So, the set can be written using description method as the set containing multiples of two. So, this is our answer for part a. Now, let's see part b. In part b, we have the set of natural numbers less than 10. Part b is the set of natural numbers less than 10. Now, we will write the set using description method by describing it clearly in words with embraces. So, the set can be written using description method as the set containing all natural numbers less than 10. This is our answer for part b. Now, let's see part c. Now, in part c, we have the set of levels in English alphabet So, part c is the set of levels in English alphabet. So, we have to describe it clearly with embraces. So, the set can be written using description method as the set containing all levels in English alphabet. This is our answer for part c. With this, we end our session. Hope you enjoyed the session.