Understanding Dictionary Order: Arranging Words Alphabetically

To arrange words in the correct order as they would appear in an English dictionary, we compare them letter by letter from left to right. When the letters are the same, we move to the next letter until we find a difference. The word with the letter that comes earlier in the alphabet is placed first.

Let's look at the given words and their corresponding numbers:

• 1: Labial
• 2: Labefaction
• 3: Laboratory
• 4: Label
• 5: Labile

All the words begin with the letters "Lab". We need to look at the fourth letter of each word to determine the initial order:

• Labial
• Labefaction
• Laboratory
• Label
• Labile

Comparing the fourth letters (i, e, o, e, i), the letter 'e' comes first in the alphabet, followed by 'i', and then 'o'. So, the words starting with "Labe" will come first, followed by words starting with "Labi", and finally the word starting with "Labo".

Let's arrange them based on the fourth letter:

1. Words starting with "Labe": Labefaction (2), Label (4)
2. Words starting with "Labi": Labial (1), Labile (5)
3. Word starting with "Labo": Laboratory (3)

Ordering Words Starting with "Labe"

Now we compare "Labefaction" and "Label". We look at the fifth letter:

• Labefaction
• Label

The letter 'f' comes before 'l' in the alphabet. Therefore, "Labefaction" comes before "Label".

So, the order for these two words is: Labefaction (2), Label (4).

Ordering Words Starting with "Labi"

Next, we compare "Labial" and "Labile". We look at the fifth letter:

• Labial
• Labile

The letter 'a' comes before 'l' in the alphabet. Therefore, "Labial" comes before "Labile".

So, the order for these two words is: Labial (1), Labile (5).

Ordering Words Starting with "Labo"

There is only one word starting with "Labo": "Laboratory". This word will come after all the "Labi" words.

Final Dictionary Order

Combining the ordered groups, we get the final dictionary order:

1. Labefaction (2)
2. Label (4)
3. Labial (1)
4. Labile (5)
5. Laboratory (3)

The correct sequence of numbers representing the words in dictionary order is 2, 4, 1, 5, 3.

Let's summarize the comparison step-by-step:

Comparing letter by letter, 'e' comes before 'i', which comes before 'o'. Within the 'e' group, 'f' in Labefaction comes before 'l' in Label. Within the 'i' group, 'a' in Labial comes before 'l' in Labile. Laboratory starts with 'o', so it comes last.

Thus, the correct order is 2, 4, 1, 5, 3.

Revision Table: Dictionary Arrangement Basics

Additional Information on Alphabetical Sorting

Alphabetical sorting is a fundamental skill used in many areas, not just dictionaries. It is used in phone books, indexes of books, sorting files on a computer, and organizing lists of names. The principle remains the same: compare entries from left to right, based on the standard alphabetical order.

Sometimes, words might have different lengths but share a common prefix, like "Apple" and "Appliance". In such cases, the shorter word with the identical prefix comes first. For example, "Cat" comes before "Catalogue". However, in this specific question, all words start with "Lab" and have subsequent letters that determine the order before length becomes a factor.

Understanding this step-by-step comparison process is key to correctly arranging any list of words or names in alphabetical order, just like a dictionary does.