Final Answer:
1) The numbers, from least to greatest, are 1/6, 3, 55/18, 139/45.
2) This ordering is based on comparing the fractions and the whole numbers.
Step-by-step explanation:
1) To order the numbers, we first compare the whole numbers: 1/6, 3, and 55/18. The whole numbers are straightforward, and 3 is greater than both 1/6 and 55/18. Then, we compare the fractions 1/6 and 55/18. By finding a common denominator, we see that 55/18 is greater than 1/6.
2) The final order, from least to greatest, is 1/6, 3, 55/18, and 139/45. This ordering considers both the whole numbers and the fractions, providing a complete arrangement.