Five jumbled up sentences (labelled $1, 2, 3, 4$ and $5$), related to a topic, are given below. Four of them can be put together to form a coherent paragraph. Identify the odd sentence and key in the number of that sentence as your answer.
- In English, there is no systematic rule for the naming of numbers; after ten, we have "eleven" and "twelve" and then the teens: "thirteen", "fourteen", "fifteen" and so on.
- Even more confusingly, some English words invert the numbers they refer to: the word "fourteen" puts the four first, even though it appears last.
- It can take children a while to learn all these words, and understand that "fourteen" is different from "forty".
- For multiples of $10$, English speakers switch to a different pattern: "twenty", "thirty", "forty" and so on.
- If you didn't know the word for "eleven", you would be unable to just guess it you might come up with something like "one-teen".