Study each sequence of numbers. Name the rule that describes
each pattern.
1. 55, 50, 45, 40, 35, 30
2. 33, 44, 55, 66, 77,88
3. 18, 27, 36, 45, 54,63
4. 32,36,31,38, 30, 40
5. 90, 10, 85, 15, 80, 20​