Understanding Dictionary Order for Words

Arranging words in dictionary order, also known as alphabetical order, involves comparing words letter by letter from left to right. When the letters are the same, you move to the next letter until you find a difference. The word with the letter that comes earlier in the alphabet is placed first.

Analyzing the Given Words

We are given the following six words:

1. Calamity
2. Calcium
3. Calculus
4. Calmly
5. Calories
6. Calendar

Step-by-Step Ordering Process

Let's compare the words letter by letter to determine their correct dictionary order.

Comparing Initial Letters

All six words start with the letters "Cal". So, we need to look at the fourth letter of each word:

• Calamity: C-a-l-a
• Calcium: C-a-l-c
• Calculus: C-a-l-c
• Calmly: C-a-l-m
• Calories: C-a-l-o
• Calendar: C-a-l-e

Now, let's arrange the words based on their fourth letter in alphabetical order:

1. 'a' (Calamity)
2. 'c' (Calcium, Calculus)
3. 'e' (Calendar)
4. 'm' (Calmly)
5. 'o' (Calories)

This gives us a preliminary order:

Calamity, (Calcium/Calculus), Calendar, Calmly, Calories.

Based on this, word 1 (Calamity) comes first. Word 6 (Calendar) comes after words 2 and 3. Word 4 (Calmly) comes after word 6. Word 5 (Calories) comes after word 4.

Ordering Words with the Same Fourth Letter

We need to compare Calcium (2) and Calculus (3), as both have 'c' as their fourth letter. We move to the fifth letter:

• Calcium: C-a-l-c-i
• Calculus: C-a-l-c-u

Comparing the fifth letters, 'i' comes before 'u' in the alphabet. Therefore, Calcium comes before Calculus.

So, the order for words 2 and 3 is: Calcium, Calculus.

Combining the Orders

Now we can combine the preliminary order with the order of words 2 and 3:

1. Calamity (starts with Cala...)
2. Calcium (starts with Calci...)
3. Calculus (starts with Calcu...)
4. Calendar (starts with Cale...)
5. Calmly (starts with Calm...)
6. Calories (starts with Calo...)

The final order of the words is:

1. Calamity (1)
2. Calcium (2)
3. Calculus (3)
4. Calendar (6)
5. Calmly (4)
6. Calories (5)

This corresponds to the sequence of numbers: 1, 2, 3, 6, 4, 5.

Comparing with Options

Let's compare our derived order (1, 2, 3, 6, 4, 5) with the given options:

1. 1, 2, 3, 4, 5, 6
2. 1, 2, 3, 6, 4, 5
3. 2, 3, 1, 6, 4, 5
4. 1, 3, 2, 6, 4, 5

Our order matches option 2.

Conclusion

By comparing the words letter by letter, starting from the first letter and moving towards the right when letters are the same, we determined the correct dictionary order. The correct sequence of the given words as they would appear in an English dictionary is Calamity, Calcium, Calculus, Calendar, Calmly, Calories.

Revision Table: Checking Dictionary Order

Reviewing the process of finding the correct dictionary order is key for mastering such questions. Always start comparison from the first letter.

Additional Information: Dictionary Order Rules

Here are some important points about dictionary order:

• Comparison starts from the leftmost letter.
• If the first letters are the same, compare the second letters, and so on.
• If one word is a prefix of another (e.g., 'cat' and 'catalog'), the shorter word comes first ('cat' before 'catalog'). This rule was not needed here as all words had at least 6 letters and distinct 4th or 5th letters where compared.
• Case sensitivity is usually ignored in standard dictionary order (all words treated as lowercase).