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Difficulty: MediumAnalogy and Classification

Arrange the following words in a logical sequence as they would appear in an English dictionary:

  1. 1Objection
  2. 2Objective
  3. 3Obligation
  4. 4Oblivion
  5. 5Obscure

Answer

The correct dictionary order is: Objection, Objective, Obligation, Oblivion, Obscure.
By strictly applying alphabetical ordering rules, we group the words by their initial letters and then differentiate within groups. 'Objection' precedes 'Objective' because 'o' comes before 'v'. 'Obligation' precedes 'Oblivion' because 'g' comes before 'v'. 'Obscure' is last because 's' comes after 'j' and 'l'.

Step-by-Step Solution

1
Compare the first three letters of all words.
All words start with 'Ob'. The third letters are 'j' (Objection, Objective), 'l' (Obligation, Oblivion), and 's' (Obscure).
Dictionary order strictly follows alphabetical order from left to right.
2
Sort the groups based on the third letter.
The 'j' group comes first, followed by the 'l' group, and finally the 's' group (Obscure).
In the alphabet, 'j' precedes 'l', which precedes 's'.
3
Order the words within the 'j' group (Objection, Objective).
'Objection' comes before 'Objective'.
The first seven letters (O-b-j-e-c-t-i) are identical. The eighth letter 'o' in Objection comes before the 'v' in Objective.
4
Order the words within the 'l' group (Obligation, Oblivion).
'Obligation' comes before 'Oblivion'.
The first three letters (O-b-l) are identical, and the fourth letter is 'i' for both. The fifth letter 'g' in Obligation comes before the 'v' in Oblivion.
5
Combine the sorted groups into the final sequence.
Objection, Objective, Obligation, Oblivion, Obscure.
This maintains the strict alphabetical sorting established in the previous steps.

Key Concept

Dictionary Arrangement and Alphabetical Order
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Topics

Analogy and Classification

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