Final answer:
The numbers arranged in order from least to greatest are: 1.23, 1.49, 2.04, 2.4, 2.85, 4.2, 9/5, 7/3, 7/2, 21/10, 6/5, 12/5, 1.5, 1.75, 1.8.
Step-by-step explanation:
The numbers arranged in order from least to greatest are:
- 1.23
- 1.49
- 2.04
- 2.4
- 2.85
- 4.2
- 9/5
- 7/3
- 7/2
- 21/10
- 6/5
- 12/5
- 1.5
- 1.75
- 1.8