1. 1, 3, 5,_ 9, 11 2. 11, 22, 36, 72, 49,_ 3. 201, 200, 301,_ 401, 400 4.1, 2, 3, 2, 4,_, 3, 6, 7 5. Study the sequence: 3, 8, 13, 18, ... What is the 20th term of the sequence​