 Hello and welcome to this session. In this session we will discuss the following question and the question says, specify each of the following sets in rest of form, part A, the set of letters in the word toffee, part B, multiples of three, less than 30, part C, the set of sentiments in the word mountain. Now before we start solving the question, let us first recall what is rest of method. In rest of method the elements of the set are separated by commas and listed within bases. So this is the key idea for this question and in this key idea we will solve the question. Let us start the solution now. Part A is the set of letters in the word toffee. So in part A we are given the word toffee. Now the distinct letters of this word are T, A, F and E. We have to write the set of letters in the word toffee in rest of form. Now going back to the key idea, we have in rest of method the elements of the set are separated by commas and listed within bases. So the given set in rest of form is the set containing the elements T, O, F, E. Since the repetition of elements is not allowed in the denotation of a set, so we have written each letter only once. So this is the answer for part A. Let us move on to part B now. In part B we have multiples of three, less than 30. So we will write all the multiples of three, less than 30 within bases separated by commas. So the given set in rest of form can be written as the set containing the elements 3, 6, 9, 12, 15, 18, 21, 24 and 27. This is the answer for part B. Part C is the set of consonants in the word mountain. So in part C we have given the word mountain. Let us find the consonants in this word. The consonants are N, N, T and this repeated twice that we will consider it only once. Now we will write the set of consonants in the word mountain in rest of form. For this we will write the letters N, N, T within bases separated by commas. So the set in part C can be written in rest of form as the set containing the letters M, N, T. This is the answer for part C. With this the entire session, hope you enjoyed the session.