1. Specify the following sets explicitly: (a) The set of letters in your first name (b) The prime numbers between 4 and 30 (e) The set of positive multiples of 6 which are less than 70 2. Specifying the following sets implicitly (a) The set of positive integers (b) The set of positive multiples of 6 (e) The set of non-negative even integers 3. Specifying the following sets using set builder notation (a) The set of non-negative integers between 5 and 25 (including 5 and 25 (b) The set of integer multiples of 10 4. List all subsets of the following sets (e) t(1, 12, 3) 11 8.50 x 11.00 in