6. Give the next five terms (s2,s3,s4,s5,s6) of the following sequences. You can assume that the sequences start with an index of 1 . i. An arithmetic sequence in which s1=1 and the common difference is 3. ii. A geometric sequence in which s1=7 and the common ratio is 5 . 7. Suppose S={1} and T={a,b}, and recall that a function from a set S to a set T can be specified as a subset of the cross product ST. a. Specify as a subset of the cross product ST an onto function from S to T, or explain why no such function exists. b. Specify as a subset of the cross product ST a one-to-one function from S to T, or explain why no such function exists