The document contains examples and definitions related to arithmetic and geometric sequences. It includes examples of sequences, the formal definition of a sequence, notation used, the nth term of sequences, arithmetic sequences, geometric sequences, and solutions to related exercises.

1. Example – (19 - 2)

2. Example – (19 – 2a)

3. Example – (19 – 2c)

4. Example – (19 – 2b)

5. Formal Definition of Sequence – (19 - 3)

6. Notation – (19 – 3a)

7. Example – (19 - 5)

8. Example – (19 – 5a)

9. Example – (19 - 6)

10. Example – (19 - 7)

11. Example – (19 – 7a)

12. Example – (19 – 7b)

13. Example – (19 – 8)

14. Example – (19 – 8a)

15. Example – (19 - 9)

16. Example – (19 – 9a)

17. Example – (19 – 9b)

18. Example – (19 – 9c)

19. Example – (19 – 9d)

20. Example – (19 - 10)

21. Example – (19 – 10a)

22. Arithmetic Sequence – (19 - 11)

23. Example – (19 – 11b)

24. Example – (19 – 11c)

25. Nth Term of a Sequence – (19 - 12)

26. Nth Term of a Sequence – (19 – 12a)

27. Example – (19 - 13)

28. Example – (19 – 13a)

29. Example – (19 - 14)

30. Example – (19 – 14a)

31. Solution – (19 - 15)

32. Solution – (19 – 15a)

33. Exercise – (19 - 16)

34. Exercise – (19 – 16a)

35. Exercise – (19 – 16b)

36. Solution – (19 - 17)

37. Solution – (19 – 17a)

38. Geometric Sequence – (19 - 18)

39. Geometric Sequence – (19 – 18a)

40. Example – (19 – 18b)

41. Example – (19 – 18c)

42. Example – (19 – 18d)

43. Nth Term of a Geometric Sequence – (19 - 19)

44. Nth Term of a Geometric Sequence – (19 – 19a)

45. Example – (19 - 20)

46. Example – (19 – 20a)

47. Example – (19 – 20b)

48. Example – (19 - 21)

49. Solution – (19 - 22)

50. Solution – (19 – 22a)

51. Example – (19 - 23)

52. Example – (19 – 23a)

53. Example – (19 - 24)

54. Example – (19 - 24a)